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
Mar 1, 2020
Mar 1, 2020 (NWF)
Mar 1, 2020
Mar 1, 2020
Mar 1, 2020 (W)
End of the Trail Half Marathon 2020 Registration
Run Through Redlands Half Marathon, 10k, 5k
Seaside School Half Marathon & 5k
Publix Georgia Marathon & Half Marathon
Super Heroes Vs Villains Half Marathon, 5k & 1mi
Friday March 5, 2021 Half Marathons
Mar 5, 2021
Saturday March 6, 2021 Half Marathons
Mar 7, 2020
Mar 7, 2020
Mar 7, 2020
Mar 7, 2020 (T)
Mar 7, 2020
Mar 6, 2021
Mar 6, 2021
Mar 6, 2021 (W)
Mar 7, 2020
Mar 7, 2020
Mar 6, 2021
Mar 6, 2021
Mar 7, 2020 (T)
Mar 6, 2021 (W)
Mar 6, 2021
Mar 6, 2021
Mar 6, 2021
Mar 6, 2021 (W)
Mar 7, 2020 (W)
Mar 6, 2021 (NWF)
Mar 7, 2020 (T)
Mar 7, 2020 (T)
Mar 7, 2020 (T)
Mar 7, 2020
Mar 7, 2020 (W)
Mar 7, 2020
Mar 6, 2021
Mar 7, 2020
Mar 7, 2020
Running the Shoals Marathon & Half Marathon 2020 Registration
Mesquite Canyon 1/2 Marathon, 50mi, 50k, 30k
Charlie Alewine Rock the Coast Marathon, Half, 15/10/5k
San Joaquin River Trail Half Marathon & 10k
Bidwell Classic Half Marathon & 5K
Best Damn Race Orlando Half Marathon, 10k, 5k
Snickers Albany Marathon, Half Marathon
Snake River Canyon Half Marathon
Lucky Leprechaun Half Marathon, 10 miler, 5k 2020 Registration
The Lamoine Half Marathon 2021 Registration
Winter Trail Fest Half Marathon & 5 mile
Trail Trashed 100mi, 50mi, 26.2mi, 13.1mi, 10k, 5k
Dustbowl Marathon, Half Marathon Series (Day 2)
Crystal Coast Half Marathon 2020 Registration
YMCA BB&T Corporate Cup Charlotte Half Marathon
Champoeg Half Marathon, Marathon Relay, 30k, 10k
Myrtle Beach Marathon & Half Marathon
Run Hard Columbia Marathon, Half Marathon, Relay, 5k
The Woodlands Marathon, Half Marathon
Crazy Desert Trail Race 100k, 50k, 13.1, 10k & 5k
Dirty Hurty Half Marathon, Red Mountain 55k, 30k Trail Runs
Show the Trail Who's Boss Half Marathon
Sand Hollow Marathon & Half Marathon
March Madness Half Marathon & 5k
Bishop Events Rolling Hills Half Marathon, 10k, 5k
Visalia
Redlands
Santa Rosa Beach
Atlanta
Houston
Newport News
California
California
Florida
Georgia
Texas
Virginia
Dalhart
Texas
Muscle Shoals
Waddell
Long Beach
Auberry
Chico
Orlando
Rome
Albany
Pullman
Lexington
Lamoine
Middleville
Henderson
Clayton
Moorehead City
Charlotte
St. Paul
Myrtle Beach
Columbia
The Woodlands
San Angelo
Ivins
Brownsville
Wichita Falls
Hurricane
Bountiful
Lorton
Lake Sammamish
Pullman
Alabama
Arizona
California
California
California
Florida
Georgia
Georgia
Idaho
Kentucky
Maine
Michigan
Nevada
New Mexico
North Carolina
North Carolina
Oregon
South Carolina
South Carolina
Texas
Texas
Texas
Texas
Texas
Utah
Utah
Virginia
Washington
Washington
Mar 8, 2020 (T)
Mar 7, 2021
Mar 7, 2021
Mar 7, 2021 (NWF)
Mar 7, 2021
Mar 7, 2021
Mar 7, 2021
Mar 7, 2021
Mar 8, 2020
Mar 8, 2020
Mar 7, 2021
Mar 8, 2020
Mar 7, 2021
Mar 8, 2020
Mar 8, 2020
Mar 8, 2020
Mar 8, 2020
Sunday Mar 7, 2021 Half Marathons
XTERRA Black Canyon Trail Half Marathon & 9k
Little Rock Marathon & Half Marathon
Santa Cruz Half Marathon, 10k, 5k
That Dam Run 13.1, 10k & 5k Crush that Dam
305 Half Marathon & 5k 2021 canceled
Marathon of the Treasure Coast Full & Half Marathon
Humana Rock 'N' Roll New Orleans Half Marathon
MudDog Half Marathon, 10k, 5k 2020 Registration
Quivering Quads Trail Half Marathon
Dustbowl Marathon, Half Marathon Series (Day 3)
Erlanger Chattanooga Marathon, Half Marathon, Relay & 5k
Black Canyon City
Little Rock
Santa Cruz
Livermore
Greenwood Village
Miami
Stuart
New Orleans
Mt. Pleasant
Troy
Hampton Beach
Lincroft
Guymon
Bluffton
Memphis
Chattanooga
San Antonio
Arizona
Arkansas
California
California
Colorado
Florida
Florida
Louisiana
Michigan
Missouri
New Hampshire
New Jersey
Oklahoma
South Carolina
Tennessee
Tennessee
Texas
Mar 8, 2021 (W)
Mar 9, 2021 (W)
Mar 14, 2020 (W)
Mar 14, 2020 (W)
Mar 13, 2021
Mar 14, 2020
Mar 14, 2020 (T)
Mar 14, 2020
Mar 14, 2020 (W)
Mar 14, 2020
Mar 13, 2021
Mar 13, 2021
Mar 13, 2021
Mar 14, 2020
Mar 14, 2020
Mar 13, 2021
Mar 14, 2020
Mar 14, 2020
Mar 14, 2020
Mar 14, 2020
Mar 14, 2020
Mar 13, 2021 (NWF)
Mar 13, 2021
Mar 14, 2020 (W)
Mar 13, 2021
Mar 14, 2020 (NWF)
Mar 14, 2020
Mar 14, 2020 (NWF)
Mar 14, 2020 (W)
Mar 14, 2020 (T)
Mar 13, 2021
Mar 14, 2020 (NWF)
Monday March 8, 2021 Half Marathons
Tuesday March 9, 2021 Half Marathons
Ulysses
Lamar
Kansas
Colorado
Saturday March 13, 2021 Half Marathons
Montgomery Marathon & Half Marathon
Kiss Me I'm Irish Run Half Marathon
Badger Cove Half Marathon, 10k, 5k
Folsom Southside Trail Run 50k, 21mi, 13.1mi, 10k, 5k
BWR Rockin' Shamrock Long Beach Half Marathon, 15/10/5k
Run Through Time Marathon, Half, 2mi
Starkey Wilderness Stomp Half Marathon, 10k, 5k 2021 Registration
Paradise Coast Half Marathon & 5k
Flatlanders Canyon Crash Trail 13.1mi, 50k, 10k, 5k
St. Patrick's Fun Run & Walk Half Marathon, 5.5mi, 3.5mi
O'round the Loch Run 13.1mi, 10k, 5k
Des Moines St. Paddy's 1/2 Marathon & 5k
Pi-Day River Rotation Half Marathon
Get Lucky Half Marathon, 14k & 7k
Run to the Pub Half Marathon & 10k
St. Patrick's Day Half Marathon, 12k, 5k, Six Tunnels to Hoover Dam
HalfBox Half Marathon 2020 Registration
City of Seneca Half Marathon & 5k
Pacing for Pieces Music Half Marathon & 5k
Run Raccoon Mountain Marathon, Half Marathon, 10k
Seabrook Lucky Trails Marathon, Half, 3/4 & Relays day 1
Sports Backers Marathon, Half Marathon, 5k
Montgomery
Glendale
Tucson
Livermore
Folsom
Los Angeles
Long Beach
Salida
New Port Richey
Naples
Lumpkin
Caldwell
Emmetsburg
Des Moines
Lawrence
Owensboro
Shreveport
Minneapolis
Bozeman
Boulder City
Greenville
Muskogee
Cottage Grove
Chambersburg
Seneca
Florence
Chattanooga
Seabrook
Henrico
Tacoma
Alabama
Arizona
Arizona
California
California
California
California
Colorado
Florida
Florida
Georgia
Idaho
Iowa
Iowa
Kansas
Kentucky
Louisiana
Minnesota
Montana
Nevada
North Carolina
Oklahoma
Oregon
Pennsylvania
South Carolina
South Carolina
Tennessee
Texas
Virginia
Washington
Sunday March 14, 2021 Half Marathons
Mar 15, 2020
Mar 15, 2020
Mar 15, 2020
Mar 15, 2020
Mar 15, 2020
Mar 15, 2020 (W)
Mar 15, 2020
Mar 15, 2020
Mar 15, 2020
Mar 15, 2020 (W)
Mar 15, 2020
Mar 15, 2020 (NWF)
March 14, 2021
Mar 15, 2020
Mar 15, 2020
Mar 15, 2020
Mar 14, 2021
Mar 15, 2020 (NWF)
Mar 14, 2021 (NWF)
Mar 15, 2020 (NWF)
Mar 15, 2020 (W)
Mar 15, 2020 (NWF)
Mar 14, 2021
Arizona Distance Classic Valley of Gold Half Marathon
Heavenly Half Marathon 2020 Registration
Blue Diamond Almonds Shamrock'n Half Marathon, 5k, 1/2 mi
Zoom St. Patrick's Day Half Marathon, 10k, 5k
BWR Rockin' Shamrock Santa Monica Half Marathon, 15/10/5k
Bishop Events St. Patty's 5k and Half to Benefit Semper Fi Fund
Marco Island Bridge Run Half Marathon
Deb Montgomery Racing St Patrick's Day Half Marathon, 10k, 5k
Big Island International Marathon, Half Marathon
Amita Health St. Paddy's Half Marathon, 5k
Zydeco Marathon & Half Marathon
B & A Marathon and Half Marathon [Canceled]
Comet Race Series The Blarney Stone Half Marathon, 10k, 5k
United Airlines NYC Half Marathon [Canceled]
Shamrock Run Portland Half Marathon, 15k, 8k, 5k
Nashville St. Paddy's Half Marathon & 5k
Seabrook Half Marathon, 1/4 Marathon, Relay & 5k day 2
Memorial Hermann Sugar Land Half Marathon
Phoenix
Oro Valley
Pine Ridge
Sacramento
Freemont
Santa Monica
Washington
Marco Island
Snellville
Hilo
Bolingbrook
Cary
Lafayette
Severna
New Bedford
Potterville
Rock Hill
New York
Portland
Nashville
Seabrook
Sugarland
Henrico
Arizona
Arizona
California
California
California
California
D.C.
Florida
Georgia
Hawaii
Illinois
Illinois
Louisiana
Maryland
Massachusetts
Michigan
New York
New York
Oregon
Tennessee
Texas
Texas
Virginia
Saturday March 20, 2021 Half Marathons
Mar 20, 2021 (W)
Mar 21, 2020
Mar 20, 2021
Mar 21, 2020
Mar 21, 2020 (T)
Mar 21, 2020 (T)
Mar 21, 2020 (NWF)
Mar 21, 2020 (T)
Mar 20, 2021
Mar 21, 2020
Mar 21, 2020
Mar 21, 2020
Mar 21, 2020
Mar 21, 2020 (NWF)
Mar 20, 2021
Mar 20, 2021
Mar 20, 2021
Mar 20, 2021
Mar 21, 2020
Mar 20, 2021 (NWF)
Mar 20, 2021 (NWF)
Mar 21, 2020
Mar 21, 2020
Mar 20, 2021
Mar 21, 2020 (T,W)
Mar 20, 2021 (T)
Mar 20, 2021
Mar 21, 2020
Mar 20, 2021
Mar 20, 2021
Mar 20, 2021
Mar 20, 2021
Mar 21, 2020 (T)
Pride Run Half Marathon, 10k, 5k
Napa Valley Trail Marathon, Half Marathon, 10k
Charlie Alewine Rock into Spring Marathon, Half, 15/10/5k
Stinson Beach Rabbit Chase Half Marathon & 10k
Napa Valley Trail Marathon, Half Marathon & 10K
Murrieta Avocado Half Marathon
Santa Teresa King Richard Trail Half Marathon, 10.5 mler, 10k, 5k
Flora Bama's Beach Run/Walk For American Warriors Half, 5k
Blue Angels Rock N Fly 1/2 Marathon & 5k
Skidway Island Marathon & Half Marathon
Maui Valley to the Sea Marathon, Half Marathon, 10k, 5k
Sam Costa Half Marathon & Quarter Marathon
Labor of Love 5k, 10k, 1/2 Marathon, Marathon, 50k, 50mi
Doc Lopez Run for Health 13.1mi, 5k, 1mi
Asheville Half Marathon at Biltmore Estates day 1
The Roanoke Canal Half Marathon
Shamrock Shuffle Half Marathon, 5k, 1mi
Warrior 1/2 Marathon, 10 Miler & 5k
Longview Half Marathon & 3.21mi 2021 Registration
San Felipe Shoot Out 13.1mi, 10k, 5k
The Grasslands Run Half Marathon, 26.2mi, 50mi
Baylor Bearathon Half Marathon & 5k
Terrapin Mountain Marathon & Half Marathon
Bishop Events Boulder Crest 5k, 10k, Half Marathon
Phoenix
Mena
Calistoga
Long Beach
Mill Valley
Helena
Murrieta
San Jose
Peridido Key
Pensacola
Savannah
Wailuku
Alton
Carmel
Baton Rouge
Orchard Beach
Las Vegas
Brooklyn
Elizabethtown
Asheville
Roanokke Ridge
Harmony
Sevierville
Longview
San Felipe
Decatur
Seabrook
Waco
Moab
Sedalia
Big Stone Gap
Springfield
Federal Way
Arizona
Arkansas
California
California
California
California
California
California
Florida
Florida
Georgia
Hawaii
Illinois
Indiana
Louisiana
Maine
Nevada
New York
New York
North Carolina
North Carolina
Pennsylvania
Tennessee
Texas
Texas
Texas
Texas
Texas
Utah
Virginia
Virginia
Virginia
Washington
Sunday March 21, 2021 Half Marathons
Mar 22, 2020
Mar 22, 2020
Mar 22, 2020
Mar 22, 2020
Mar 21, 2021 (NWF)
Mar 21, 2021 (W)
Mar 22, 2020 (NWF)
Mar 22, 2020
Mar 21, 2021
Mar 21, 2021
Mar 22, 2020
Mar 22, 2020
Mar 22, 2020
Mar 21, 2021 (W)
Mar 21, 2021 (NWF)
Mar 22, 2020
Mar 22, 2020
Mar 22, 2020
Mar 22, 2020
Mar 22 2020
Mar 21, 2021 (W)
Mar 22, 2020
Mar 22, 2020
Mayor's Green Day Gallaop Half Marathon, 10k, 5k 2020 Registration
Oakland Running Festival Marathon, Half Marathon
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
Florida Road Races Florida Shamrock Halfathon & 5k
Down2Earth Half Marathon, 10k, 5k Amelia Park
Chisholm Trail Marathon, Half Marathon, 5k
The Probility Ann Arbor Marathon, Half Marathon, 10k, 5k
Fallen Comrades Half Marathon 2020 Registration
Tobacco Road Marathon & Half Marathon
Asheville Marathon and Half Marathon at Biltmore Estates day 2
Mill Creek Distance Classic Half Marathon & 5k
The Whiskey Run Nashville Half Marathon & 5k
Yuengling Shamrock Marathon, Half Marathon, 8k
Bishop Events Spring Lynchburg Half Marathon, 10k, 5k
Palmer
Van Nuys
Oakland
Irvine
San Diego
Golden
Fort Collins
Wilmington
Ft. Desoto Park
Hialeah
Wichita
Ann Arbor
West Point
Cary
Ashville
Cincinnati
Youngstown
Cincinnati
Springfield
Nashville
Virginia Beach
Lynchburg
Mercer Island
Alaska
California
California
California
California
Colorado
Colorado
Delaware
Florida
Florida
Kansas
Michigan
New York
North Carolina
North Carolina
Ohio
Ohio
Ohio
Oregon
Tennessee
Virginia
Virginia
Washington
Saturday March 27, 2021 Half Marathons
Mar 28, 2020
Mar 28, 2020
Mar 27, 2021
Mar 27, 2021 (T)
Mar 27, 2021 (T)
Mar 28, 2020
Mar 28, 2020
Mar 28, 2020
Mar 27, 2021 (W)
Mar 27, 2021
Mar 28, 2020
Mar 27, 2021
Mar 28, 2020
Mar 28, 2020
Mar 28, 2020
Mar 28, 2020
Mar 27, 2021 (NWF)
Mar 28, 2020
Mar 28, 2020
Mar 27, 2021
Mar 27, 2021 (T)
Mar 28, 2020
Mar 28, 2020
Mar 27, 2021 (NWF)
Mar 27, 2021 (NWF)
Mar 27, 2021 (NWF)
Mar 28, 2020
Mar 27, 2021 (T)
Mar 27, 2021
Mar 27, 2021
Mar 28, 2020
Mar 28, 2020
Mar 28, 2020
Mar 28, 2020
Mar 28, 2020
Mar 28, 2020
Mar 28, 2020
Mar 27, 2021
Mar 28, 2021
Mar 28, 2021
Mar 29, 2020
Mar 29, 2020
Mar 29, 2020
Mar 28, 2021
Mar 29, 2020
Mar 29, 2020
Mar 28, 2021
Mar 29, 2020
Mar 29, 2020
Mar 29, 2020
Mar 28, 2021
Mar 28, 2021
Mar 29, 2020
Mar 28, 2021
Mar 28, 2021
Mar 29, 2020
Mar 29, 2020
Mar 29, 2020
Mar 29, 2020
Mar 29, 2020
Mar 29, 2020
Mar 29, 2020
The Hogeye Marathon, Half Marathon & Relays 2019
Great Race Pacific Half Marathon & Chesebro Half Marathon
Golden Gate Headlands Marathon, Half Marathon, 10k
Valencia Trail Race 10k, Half Marathon, 50k
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 1/2 Marathon, 10k, 5k
Let's Flamingle Half Marathon, 10k, 5k day 1 2020 Registration
Publix Savannah Women's Half & 5k
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 "The Original"
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
Two Rivers Race Festival Marathon, Half Marathon, 10k, 5k day 1
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
Mill Valley
Valencia
Long Beach
Orange
West Haven
Washington
Clermont
Ocala
Savannah
Lawrenceville
Oskaloosa
Ulysses
Wamego
Lexington
Bowling
Greenwood
Lake Ozark
Boulder City
Manchester
Sleepy Hollow
Sunset Beach
Bern
Emerald Isle
Hickory
Adrian
New Holland
Hawley
Hawley
Fredericksburg
Midland
Riverton
St. George
Redmond
Olympia
Everett
Sunday March 28, 2021 Half Marathons
Modesto Marathon, Half Marathon, 5k & Relay
Hellyer Half Marathon, 10k, 5k
Dustbowl Marathon, Half Marathon Series (Day 5)
Let's Flamingle Half Marathon, 10k, 5k day 2 2020 Registration
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]
Duke City Marathon, Half Marathon, 20k, 10k, 5k & Relay
Cary Greenways Half Marathon 2021 Registration
All American Marathon & Mike to Mike Half Marathon
Philadelphia Love Run Half Marathon
Two Rivers Race Festival Marathon, Half Marathon, 10k, 5k day 2
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
Lamar
Ocala
New Orleans
Kittery
Upper Marlboro
Cambridge
Gross Isle
St. Louis
Rye
Albuquerque
Cary
Fayetteville
Philadelphia
Hawley
Scranton
Philadelphia
Hawley
Knoxville
Arlington
Everett
Waukesha
Alabama
Arkansas
California
California
California
California
California
Connecticut
D.C.
Florida
Florida
Georgia
Illinois
Iowa
Kansas
Kansas
Kentucky
Kentucky
Mississippi
Missouri
Nevada
New Hampshire
New York
North Carolina
North Carolina
North Carolina
North Carolina
Oregon
Pennsylvania
Pennsylvania
Pennsylvania
Texas
Texas
Utah
Utah
Washington
Washington
Washington
California
California
California
Colorado
Florida
Louisiana
Maine
Maryland
Massachusetts
Michigan
Missouri
New Hampshire
New Mexico
North Carolina
North Carolina
Pennsylvania
Pennsylvania
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.