March Half Marathons
Official Walker Friendly Half Marathons in March
18:32 mile / 4 Hour Minimum course time limit= (W)
Symbol only applies to half marathon events
Trail Half Marathons (T)
Does NOT meet the Walker Friendly 4 hour minimum (18:32 / mi) = Not Walker Friendly (NWF)
Date
Sunday March 1, 2020 Half Marathons
City
State
Mar 1, 2020
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Mar 1, 2020
Mar 1, 2020
Mar 1, 2020 (W)
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Mar 1, 2020 (NWF)
Mar 1, 2020
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Mar 1, 2020
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Mar 1, 2020 (W)
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Mar 1, 2020
Charlie Alewine Rock into March Marathon, 3/4, Half, 15/10/5k
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End of the Trail Half Marathon 2020 Registration
Run Through Redlands Half Marathon, 10k, 5k
Marathon of the Treasure Coast 26.2, 13.1, 5k
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Seaside School Half Marathon & 5k
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Publix Georgia Marathon & Half Marathon
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Super Heroes Vs Villains Half Marathon, 5k & 1mi
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One City Marathon, Half Marathon, Relay, 8k & 1mi
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Saturday March 6, 2021 Half Marathons
Mar 7, 2020
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Mar 7, 2020
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Mar 7, 2020
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Mar 7, 2020 (T)
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Mar 7, 2020
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Mar 6, 2021
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Mar 7, 2020
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Mar 6, 2021
Mar 6, 2021 (W)
Mar 7, 2020
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Mar 7, 2020
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Mar 6, 2021
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Mar 7, 2020 (T)
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Mar 6, 2021
Mar 6, 2021
Mar 6, 2021
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Mar 6, 2021 (W)
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Mar 7, 2020 (W)
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Mar 6, 2021 (NWF)
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Mar 7, 2020 (T)
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Mar 7, 2020 (T)
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Mar 7, 2020 (T)
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Mar 7, 2020
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Mar 7, 2020 (W)
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Mar 7, 2020
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Mar 7, 2020
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Mar 7, 2020
Running the Shoals Marathon & Half Marathon 2020 Registration
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Mesquite Canyon 1/2 Marathon, 50mi, 50k, 30k
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Charlie Alewine Rock the Coast Marathon, Half, 15/10/5k
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San Joaquin River Trail Half Marathon & 10k
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Bidwell Classic Half Marathon & 5K
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Best Damn Race Orlando Half Marathon, 10k, 5k
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Orange Blossom Half Marathon and 5k
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Snickers Albany Marathon, Half Marathon
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Snake River Canyon Half Marathon
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Lucky Leprechaun Half Marathon, 10 miler, 5k 2020 Registration
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The Lamoine Half Marathon 2021 Registration
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Trail Trashed 100mi, 50mi, 26.2mi, 13.1mi, 10k, 5k
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Crystal Coast Half Marathon 2020 Registration
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YMCA BB&T Corporate Cup Charlotte Half Marathon
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Champoeg Half Marathon, Marathon Relay, 30k, 10k
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Myrtle Beach Marathon & Half Marathon
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Run Hard Columbia Marathon, Half Marathon, Relay, 5k
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The Woodlands Marathon, Half Marathon
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Crazy Desert Trail Race 100k, 50k, 13.1, 10k & 5k
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Dirty Hurty Half Marathon, Red Mountain 55k, 30k Trail Runs
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Show the Trail Who's Boss Half Marathon
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Sand Hollow Marathon & Half Marathon
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March Madness Half Marathon & 5k
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Long Beach
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Visalia
Redlands
Stuart
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Santa Rosa Beach
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Atlanta
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Houston
​
Newport News
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Sportsylvania
California
​
California
California
Florida
​
Florida
​
Georgia
​
Texas
​
Virginia
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Virginia
Muscle Shoals
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Waddell
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Long Beach
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Auberry
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Chico
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Orlando
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Haines City
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Rome
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Albany
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Pullman
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Lexington
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Lamoine
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Henderson
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Moorehead City
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Charlotte
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St. Paul
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Myrtle Beach
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Columbia
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The Woodlands
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San Angelo
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Ivins
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Brownsville
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Wichita Falls
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Hurricane
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Bountiful
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Lake Sammamish
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Pullman
Alabama
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Arizona
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California
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California
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California
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Florida
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Florida
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Georgia
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Georgia
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Idaho
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Kentucky
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Maine
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Nevada
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North Carolina
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North Carolina
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Oregon
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South Carolina
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South Carolina
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Texas
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Texas
​
Texas
​
Texas
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Texas
​
Utah
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Utah
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Washington
​
Washington
Sunday Mar 7, 2021 Half Marathons
Mar 8, 2020 (T)
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Mar 7, 2021
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Mar 7, 2021
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Mar 7, 2021 (NWF)
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Mar 8, 2020
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Mar 7, 2021
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Mar 7, 2021
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Mar 7, 2021
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Mar 8, 2020
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Mar 8, 2020
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Mar 7, 2021
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Mar 8, 2020
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Mar 8, 2020
Mar 8, 2020
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Mar 8, 2020
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Mar 8, 2020
XTERRA Black Canyon Trail Half Marathon & 9k
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Little Rock Marathon & Half Marathon
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Santa Cruz Half Marathon, 10k, 5k
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Charlie Alewine March Madness Marathon, 3/4, Half, 15/10/5k
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That Dam Run 13.1, 10k & 5k Crush that Dam
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Humana Rock 'N' Roll New Orleans Half Marathon
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MudDog Half Marathon, 10k, 5k 2020 Registration
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Quivering Quads Trail Half Marathon
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​
​
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Erlanger Chattanooga Marathon, Half Marathon, Relay & 5k
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Black Canyon City
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Little Rock
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Santa Cruz
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Livermore
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Long Beach
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Greenwood Village
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Miami
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New Orleans
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Mt. Pleasant
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Troy
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Hampton Beach
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Lincroft
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Bluffton
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Memphis
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Chattanooga
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San Antonio
Arizona
​
Arkansas
​
California
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California
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California
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Colorado
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Florida
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Louisiana
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Michigan
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Missouri
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New Hampshire
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New Jersey
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South Carolina
Tennessee
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Tennessee
​
Texas
Saturday March 13, 2021 Half Marathons
Mar 14, 2020 (W)
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Mar 14, 2020 (W)
Mar 14, 2020
Mar 14, 2020
Mar 14, 2020
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Mar 14, 2020 (T)
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Mar 14, 2020
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Mar 14, 2020 (W)
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Mar 14, 2020
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Mar 13, 2021
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Mar 14, 2020
Mar 14, 2020
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Mar 13, 2021
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Mar 14, 2020
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Mar 14, 2020
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Mar 14, 2020
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Mar 14, 2020
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Mar 14, 2020
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Mar 13, 2021 (NWF)
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Mar 14, 2020 (W)
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Mar 14, 2020 (NWF)
Mar 14, 2020
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Mar 14, 2020 (NWF)
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Mar 14, 2020 (W)
Mar 14, 2020 (T)
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Mar 14, 2020 (NWF)
Montgomery Marathon & Half Marathon
Kiss Me I'm Irish Run Half Marathon
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​
Charlie Alewine Rock'n the Bay Marathon, 3/4, Half, 15/10/5k
Badger Cove Half Marathon, 10k, 5k
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Folsom Southside Trail Run 50k, 21mi, 13.1mi, 10k, 5k
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BWR Rockin' Shamrock Long Beach Half Marathon, 15/10/5k
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Run Through Time Marathon, Half, 2mi
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Starkey Wilderness Stomp Half Marathon, 10k, 5k
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St. Patrick's Fun Run & Walk Half Marathon, 5.5mi, 3.5mi
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O'round the Loch Run 13.1mi, 10k, 5k
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Des Moines St. Paddy's 1/2 Marathon & 5k
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Pi-Day River Rotation Half Marathon
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​
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Get Lucky Half Marathon, 14k & 7k
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Run to the Pub Half Marathon & 10k
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St. Patrick's Day Half Marathon, 12k, 5k, Six Tunnels to Hoover Dam
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HalfBox Half Marathon 2020 Registration
​
City of Seneca Half Marathon & 5k
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Pacing for Pieces Music Half Marathon & 5k
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Run Raccoon Mountain Marathon, Half Marathon, 10k
Seabrook Lucky Trails Marathon, Half, 3/4 & Relays day 1
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Montgomery
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Glendale
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Tucson
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Long Beach
Livermore
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Folsom
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Los Angeles
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Long Beach
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Salida
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New Port Richey
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Caldwell
Emmetsburg
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Des Moines
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Lawrence
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Owensboro
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Shreveport
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Minneapolis
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Bozeman
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Boulder City
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Muskogee
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Chambersburg
Seneca
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Florence
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Chattanooga
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Seabrook
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Tacoma
Alabama
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Arizona
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Arizona
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California
California
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California
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California
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California
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Colorado
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Florida
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Idaho
Iowa
​
Iowa
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Kansas
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Kentucky
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Louisiana
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Minnesota
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Montana
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Nevada
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Oklahoma
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Pennsylvania
South Carolina
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South Carolina
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Tennessee
Texas
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Washington
Sunday March 14, 2021 Half Marathons
Mar 15, 2020
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Mar 15, 2020
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Mar 15, 2020
Mar 15, 2020
Mar 15, 2020
Mar 15, 2020
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Mar 15, 2020 (W)
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Mar 15, 2020
Mar 15, 2020
Mar 15, 2020
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Mar 15, 2020
Mar 15, 2020 (W)
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Mar 15, 2020
Mar 15, 2020 (NWF)
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March 14, 2021
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Mar 15, 2020
Mar 15, 2020
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Mar 15, 2020
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Mar 15, 2020 (W)
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Mar 14, 2021
Mar 15, 2020 (NWF)
Mar 14, 2021 (NWF)
Mar 15, 2020 (NWF)
Mar 15, 2020 (W)
Mar 15, 2020 (NWF)
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Arizona Distance Classic Valley of Gold Half Marathon​
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Charlie Alewine Rock St. Patrick's Day Marathon, Half, 15/10/5k
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Heavenly Half Marathon 2020 Registration
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Blue Diamond Almonds Shamrock'n Half Marathon, 5k, 1/2 mi
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Zoom St. Patrick's Day Half Marathon, 10k, 5k
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BWR Rockin' Shamrock Santa Monica Half Marathon, 15/10/5k
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Bishop Events St. Patty's 5k and Half to Benefit Semper Fi Fund
Florida Road Races Florida Shamrock Half Marathon & 5k
Marco Island Bridge Run Half Marathon
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Deb Montgomery Racing St Patrick's Day Half Marathon, 10k, 5k
Big Island International Marathon, Half Marathon
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Amita Health St. Paddy's Half Marathon, 5k
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Zydeco Marathon & Half Marathon
​
B & A Marathon and Half Marathon [Canceled]
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Comet Race Series The Blarney Stone Half Marathon, 10k, 5k
Tobacco Road Marathon & Half Marathon
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United Airlines NYC Half Marathon [Canceled]
Shamrock Run Portland Half Marathon, 15k, 8k, 5k
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Nashville St. Paddy's Half Marathon & 5k
Seabrook Half Marathon, 1/4 Marathon, Relay & 5k day 2
Phoenix
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Oro Valley
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Long Beach
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Pine Ridge
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Sacramento
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Freemont
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Santa Monica
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Washington
Ft. De Soto Beach
Marco Island
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Snellville
Hilo
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Bolingbrook
Cary
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Lafayette
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Severna
New Bedford
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Potterville
Cary
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Rock Hill
New York
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Portland
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Nashville
Seabrook
Sugarland
Arizona
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Arizona
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California
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California
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California
​
California
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California
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D.C.
Florida
Florida
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Georgia
Hawaii
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Illinois
Illinois
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Louisiana
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Maryland
Massachusetts
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Michigan
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North Carolina
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New York
New York
Oregon
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Tennessee
Texas
Texas
Saturday March 20, 2021 Half Marathons
Mar 20, 2021 (W)
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Mar 21, 2020
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Mar 21, 2020
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Mar 21, 2020 (T)
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Mar 21, 2020 (T)
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Mar 21, 2020 (NWF)
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Mar 21, 2020 (T)
Mar 21, 2020
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Mar 21, 2020
Mar 21, 2020
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Mar 21, 2020
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Mar 21, 2020
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Mar 21, 2020 (NWF)
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Mar 20, 2021
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Mar 20, 2021
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Mar 20, 2021
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Mar 21, 2020
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Mar 21, 2020
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Mar 21, 2020
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Mar 21, 2020
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Mar 21, 2020
Mar 21, 2020 (T,W)
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Mar 20, 2021 (T)
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Mar 21, 2020
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Mar 20, 2021
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Mar 21, 2020
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Mar 21, 2020
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Mar 21, 2020
Mar 21, 2020 (T)
Pride Run Half Marathon, 10k, 5k
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​
Charlie Alewine Rock into Spring Marathon, Half, 15/10/5k
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Stinson Beach Rabbit Chase Half Marathon & 10k
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Napa Valley Trail Marathon, Half Marathon & 10K
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Murrieta Avocado Half Marathon
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Santa Teresa King Richard Trail Half Marathon, 10.5 mler, 10k, 5k
Tomoka Marathon, Half Marathon, & 5k
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Blue Angels Rock N Fly 1/2 Marathon & 5k
Skidway Island Marathon & Half Marathon
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Maui Valley to the Sea Marathon, Half Marathon, 10k, 5k
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Sam Costa Half Marathon & Quarter Marathon
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Labor of Love 5k, 10k, 1/2 Marathon, Marathon, 50k, 50mi
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Doc Lopez Run for Health 13.1mi, 5k, 1mi
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Asheville Half Marathon at Biltmore Estates day 1
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Shamrock Shuffle Half Marathon, 5k, 1mi
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Warrior 1/2 Marathon, 10 Miler & 5k
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Longview Half Marathon & 3.21mi 2020 Registration
San Felipe Shoot Out 13.1mi, 10k, 5k
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The Grasslands Run Half Marathon, 26.2mi, 50mi
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Baylor Bearathon Half Marathon & 5k
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Terrapin Mountain Marathon & Half Marathon
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Bishop Events Boulder Crest Half Marathon, 10k, 5k
Phoenix
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Mena
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Long Beach
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Mill Valley
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Helena
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Murrieta
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San Jose
Ormond Beach
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Pensacola
Savannah
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Wailuku
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Alton
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Carmel
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Baton Rouge
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Las Vegas
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Brooklyn
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Elizabethtown
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Asheville
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Harmony
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Sevierville
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Longview
San Felipe
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Decatur
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Waco
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Moab
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Sedalia
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Big Stone Gap
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Springfield
Federal Way
Arizona
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Arkansas
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California
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California
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California
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California
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California
Florida
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Florida
Georgia
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Hawaii
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Illinois
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Indiana
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Louisiana
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Nevada
​
New York
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New York
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North Carolina
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Pennsylvania
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Tennessee
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Texas
Texas
​
Texas
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Texas
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Utah
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Virginia
​
Virginia
​
Virginia
Washington
Sunday March 21, 2021 Half Marathons
Mar 22, 2020
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Mar 22, 2020
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Mar 22, 2020
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Mar 22, 2020
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Mar 22, 2020
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Mar 21, 2021 (NWF)
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Mar 21, 2021 (W)
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Mar 22, 2020 (NWF)
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Mar 22, 2020
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Mar 22, 2020
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Mar 22, 2020
Mar 22, 2020
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Mar 22, 2020
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Mar 22, 2020
Mar 22, 2020
Mar 22, 2020
Mar 22, 2020
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Mar 22 2020
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Mar 21, 2021 (W)
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Mar 22, 2020
Mar 22, 2020
Mayor's Green Day Gallaop Half Marathon, 10k, 5k 2020 Registration
​
​
Oakland Running Festival Marathon, Half Marathon
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Charlie Alewine Rock Marina Vista Marathon, 3/4, Half, 15/10/5k
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PCRF Reaching for the Cure Run Half Marathon, 10k, 5k
​
​
All-Out Spring Fever Half Marathon, 10k, 5k, 1 Mile
​
Equinox Inaugural Spring Half Marathon
​
American Lung Assoc. Caeser Rodney 1/2 Marathon
​
Chisholm Trail Marathon, Half Marathon, 5k
The Probility Ann Arbor Marathon, Half Marathon, 10k, 5k
Fallen Comrades Half Marathon 2020 Registration
​
Asheville Marathon and Half Marathon at Biltmore Estates day 2
​
​
Mill Creek Distance Classic Half Marathon & 5k
​
​
The Whiskey Run Nashville Half Marathon & 5k
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Yuengling Shamrock Marathon, Half Marathon, 8k
​
Bishop Events Spring Lynchburg Half Marathon, 10k, 5k
​
Palmer
​
Van Nuys
​
Oakland
​
Long Beach
​
Irvine
​
San Diego
​
Golden
​
Fort Collins
​
Wilmington
​
Wichita
​
Ann Arbor
​
West Point
​
Ashville
​
Cincinnati
​
Youngstown
​
Cincinnati
Springfield
​
Nashville
​
Virginia Beach
​
Lynchburg
​
Mercer Island
Alaska
​
California
​
California
​
California
​
California
​
California
​
Colorado
​
Colorado
​
Delaware
​
Kansas
Michigan
​
New York
​
North Carolina
​
Ohio
​
Ohio
​
Ohio
Oregon
​
Tennessee
​
Virginia
​
Virginia
​
Washington
Wednesday March 25, 2020 Half Marathons
Mar 25, 2020
Dalhart
Texas
Thursday March 26, 2020 Half Marathons
Mar 26, 2020
Clayton
New Mexico
Friday March 27, 2020 Half Marathons
Mar 27, 2020
Guymon
Oklahoma
Saturday March 27, 2021 Half Marathons
Mar 28, 2020
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Mar 28, 2020
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Mar 27, 2021
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Mar 28, 2020
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Mar 28, 2020 (T)
​
Mar 28, 2020
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Mar 28, 2020
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Mar 28, 2020
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Mar 28, 2020 (W)
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Mar 28, 2020
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Mar 28, 2020
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Mar 28, 2020
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Mar 28, 2020
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Mar 28, 2020
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Mar 28, 2020
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Mar 28, 2020
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Mar 27, 2021 (NWF)
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Mar 28, 2020
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Mar 28, 2020
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Mar 27, 2021
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Mar 27, 2021 (T)
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Mar 28, 2020
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Mar 28, 2020
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Mar 27, 2021 (NWF)
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Mar 27, 2021
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Mar 27, 2021 (NWF)
​
Mar 28, 2020
​
Mar 28, 2020 (T)
​
Mar 27, 2021
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Mar 28, 2020
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Mar 28, 2020
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Mar 28, 2020
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Mar 28, 2020
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Mar 28, 2020
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Mar 28, 2020
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Mar 28, 2020
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Mar 27, 2021
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The Hogeye Marathon, Half Marathon & Relays 2019
​
Great Race Pacific Half Marathon & Chesebro Half Marathon
​
Charlie Alewine Blaze the Marina Marathon, 3/4, Half, 15/10/5k
​
Golden Gate Headlands Marathon, Half Marathon, 10k [postponed]
​
BWR Spring Dash Half Marathon 15/10/5k
​
Into the Wild OC Trail Run 30k, 21k (13.1mi), & 10k
​
​
Rock'n'roll Washington D.C. Marathon & Half
​
Lake Minneola Half Marathon, 12, 5k
​
Flora-Bama's Beach Run-Walk 1/2 Marathon & 5k
​
Let's Flamingle Half Marathon, 10k, 5k day 1 2020 Registration
​
Southern Illinois Spring Classic Half Marathon, 5k 2020 Registration
​
A Pot of Gold Shared Half Marathon & 5k
​
MM Dustbowl Marathon, Half Marathon Series (Day 4)
​
Wicked Marathon, Half Marathon, 5k
​
Run the Bluegrass Half Marathon
​
Run Walk For Children Half Marathon & 5k
​
Viking Half Marathon & 5k [postponed]
​
Bridge and Dam Half Marathon & 10k
​
Desert Dash Blood, Sweat & Beers Marathon, Half, 50/30/10/5k, 2mi
​
Citizens Bank Shamrock Half Marathon & Relay
​
​
Run Sunset Beach Half Marathon, 10k, 1mi
​
Neuse River Bridge Half Marathon, 10k, 5k
​
Emerald Isle Marathon, Half Marathon, 5k
​
Charity Chase Half Marathon, 5k 2020 Registration​
​
Owyhee Off-Road Challenge Half Marathon, 10K/5K
​
Garden Spot Village 1/2 Marathon & 10k
​
​
Wanderlust Half Marathon TX Hill Country Series (All 4)
​
Trinity River Levee Run Half Marathon, 10k, 5k
​
Riverton Half Marathon & 4 Life 5k
​
​
Redmond Watershed Preserve Trail Marathon, Half, 10mi, 5mi
​
Mountain Marathon & Hillbilly Half Marathon [postponed] 2020 Registration
​
Tuscaloosa
​
Fayetteville
​
Agoura
​
Long Beach
​
Mill Valley
​
Long Beach
​
Orange
​
West Haven
​
Washington
​
Clermont
​
Perdido Key
​
Ocala
​
Lawrenceville
​
Oskaloosa
​
Ulysses
​
Wamego
​
Lexington
​
Bowling
​
Greenwood
​
Lake Ozark
​
Boulder City
​
Manchester
​
Sleepy Hollow
​
Sunset Beach
​
Bern
​
Emerald Isle
​
Hickory
​
Adrian
​
New Holland
​
Hawley
​
Fredericksburg
​
Midland
​
Riverton
​
St. George
​
Redmond
​
Olympia
​
Everett
Alabama
​
Arkansas
​
California
​
California
​
California
​
California
​
California
​
Connecticut
​
D.C.
​
Florida
​
Florida
​
Florida
​
Illinois
​
Iowa
​
Kansas
​
Kansas
​
Kentucky
​
Kentucky
​
Mississippi
​
Missouri
​
Nevada
​
New Hampshire
​
New York
​
North Carolina
​
North Carolina
​
North Carolina
​
North Carolina
​
Oregon
​
Pennsylvania
​
Pennsylvania
​
Texas
​
Texas
​
Utah
​
Utah
​
Washington
​
Washington
​
Washington
Sunday March 28, 2021 Half Marathons
Mar 28, 2021
​
Mar 28, 2021
​
Mar 29, 2020
​
Mar 29, 2020
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Mar 29, 2020
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Mar 29, 2020
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Mar 29, 2020
​
Mar 29, 2020
​
Mar 28, 2021
​
Mar 29, 2020
​
Mar 29, 2020
​
Mar 29, 2020
​
Mar 29, 2020
​
Mar 29, 2020
​
Mar 28, 2021
​
Mar 29, 2020
​
Mar 29, 2020
​
Mar 29, 2020
​
Mar 29, 2020
​
Mar 29, 2020
​
Mar 29, 2020
​
Mar 29, 2020
​
Mar 29, 2020
​
Modesto Marathon, Half Marathon, 5k & Relay
​
Hellyer Half Marathon, 10k, 5k
​
Charlie Alewine Blast the Beach, 2/3, Half, 15k, 10k, 5k
​
Dustbowl Marathon, Half Marathon Series (Day 5)
​
USA Beach Running Championships Half Marathon, 10k
​
Let's Flamingle Half Marathon, 10k, 5k day 2 2020 Registration
​
Sunrise Half Marathon
​
Best Damn Race New Orleans Half Marathon & 5k
​
Run for the Border Half Marathon & Eastern States 20 Mile [Postponed]
​
EX2 Rosaryville Trail Half Marathon, 10k
​
​
Go! St. Louis Half Marathon, Marathon, 5k
​
Run for the Border Half Marathon & Eastern States 20 Mile [Posponed]
​
Cary Greenways Half Marathon 2021 Registration
​
All American Marathon & Mike to Mike Half Marathon
​
Scranton Half Marathon [postponed]
​
Philadelphia Love Run Half Marathon
​
Two Rivers Race Festival (day 2)
​
Covenant Health Knoxville Marathon, Half Marathon, Relay, 5k
​
Arlington Marathon, Half Marathon, 5k
​
​
Encinatas
​
Modesto
​
San Jose
​
Long Beach
​
Lamar
​
Cocoa Beach
​
Ocala
​
Sunrise
​
New Orleans
​
Kittery
​
Upper Marlboro
​
Gross Isle
​
St. Louis
​
Rye
​
Cary
​
Fayetteville
​
Scranton
​
Philadelphia
​
Hawley
​
Knoxville
​
Arlington
​
Everett
​
Waukesha
California
​
California
​
California
​
California
​
Colorado
​
Florida
​
Florida
​
Florida
​
Louisiana
​
Maine
​
Maryland
​
Michigan
​
Missouri
​
New Hampshire
​
North Carolina
​
North Carolina
​
Pennsylvania
​
Pennsylvania
​
Pennsylvania
​
Tennessee
​
Texas
​
Washington
​
Wisconsin
March Half Marathon Calendar event dates in dark grey are delinquent dates not updated by the race organizer yet. We strive to have dates 1 year out for March half marathons, but have no control of when they set, announce or update their dates.
March Half Marathons
The March Half Marathon Calendar is a complete simplistic listing of March half marathons 2021 in the USA. Currently the March half marathon schedule has 2021 half marathons, and March half marathons 2022 will be updated as they roll in from the 1/2 marathon race organizers. The March Half Marathon schedule identifies trail half marathons and walker friendly half marathons by a (T) symbol and a (W) symbol. The (T) means it is a TRUE trail half marathon (off road, switchbacks, etc) and a (W) means it is truly "official walker friendly" requiring the half marathon to allow a minimum of 18:32 mile pace, minimum 4 hours for participants to finish the 13.1 mile distance.
The March half marathon calendar features a complete listing of 2021 March half marathons in California, March half marathons in Texas, March half marathons in Colorado, March half marathons in New York, March half marathons in Utah, March half marathons in Illinois, March half marathons in Ohio, March half marathons in Florida, and all other 1/2 marathons in March across the USA.
A half marathon is 13.1 miles (or in kilometers is a 21k). We understand sometimes there will be a slight margin of error up or down when runners run or walk any race distance, however our calendar only is a listing for true half marathons that do all they can to measure their course as an official half marathon 13.1 mile / 21k distance. Races that are not 13.1 miles, we encourage not to call their race a 1/2 marathon to lessen confusion for runners & walkers looking to participate in a true 1/2 marathon distance. Some runners don't care, but you'd be surprised how many that do.