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Colorado Half Marathons

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Official Walker Friendly Half Marathons in Colorado

18:32 mile / 4 Hour Minimum course time limit= (W)

Symbol only applies to half marathon events

Trail Half Marathons (T)

Colorado Half Marathons 2024 & 2025

Does NOT meet the Walker Friendly 4 hour minimum (18:32 / mi) = Not Walker Friendly (NWF) 

Date
Colorado Half Marathons January 2025

Sat Jan 11, 2025 (W)

 

Sun Jan 19, 2025 (NWF)

Colorado Half Marathons February 2025

Sun Feb 11, 2024 (NWF)

Sun Feb 16, 2025

 

Sun Feb 18, 2024  (W)

Sat Feb 22, 2025

Location

Arvada, CO

 

Louisville, CO

Colorado Springs, CO

Colorado Springs, CO

Arvada, CO

Arvada, CO

Colorado Half Marathons March 2025

Sun Mar 3, 2024 (NWF)

 

Sat Mar 9, 2024 (W)

 

Sun Mar 23, 2025 (W)

Sun Mar 24, 2024 (NWF)

Greenwood Village, CO

Salida, CO

 

Golden, CO

Fort Collins, CO

Colorado Half Marathons April 2025

Sun Apr 7, 2024 (W)

Sat Apr 13, 2024 (NWF)

Sun Apr 13, 2025 (W)

Sun Apr 13, 2025 (NWF)

Sun Apr 13, 2025 (NWF)

Sat Apr 19, 2025 (W)

Sun Apr 21, 2024

Sat Apr 26, 2025

Aurora, CO

Boulder, CO

Fort Collins, CO

Arvada, CO

Littleton, CO

Westminster, CO

Colorado Springs, CO

Brighton, CO

Colorado Half Marathons May 2025

Sun May 4, 2025

Sat May 11, 2024

Sat May 10, 2025 (T)

Sun May 12, 2024

Sat May 17, 2025

Sun May 18, 2025

Fort Collins, CO

Firestone, CO

Colorado Springs, CO

Boulder, CO

Divide, CO

Aurora, CO

Colorado Half Marathons June 2024

Sat Jun 3, 2023

Sat Jun 1, 2024 (W)

Sat Jun 1, 2024

Sat Jun 1, 2024

Sat Jun 1, 2024

Sun Jun 2, 2024

Sun Jun 2, 2024 (W)

Sat Jun 8, 2024 (W)

Sat Jun 8, 2024

Sun Jun 9, 2024

 

Sun Jun 16, 2024 (W)

 

Sat Jun 22, 2024 (W)

Colorado Half Marathons July 2024

Creede, CO

Morrison, CO

Highlands Ranch, CO

Basalt, CO

Towaod, CO

Louisville, CO

Steamboat Springs, CO

Arvada, CO

Durango, CO

Littleton, CO

 

Estes Park, CO

 

Georgetown, CO

Thu Jul 4, 2024

Sat Jul 13, 2024 (W)

 

Sat Jul 13, 2024

 

Sat Jul 20, 2024 (NWF)

Longmont, CO

Westminster, CO

 

Aspen, CO

 

Castle Rock, CO

Sat Aug 3, 2024

Sat Aug 3, 2024 (W)

Sat Aug 3, 2024

Sat Aug 10, 2024

Sun Aug 4, 2024 (T)

 

Sat Aug 10, 2024

Sat Aug 17, 2024 (W)

Sat Aug 17, 2024

Sun Aug 18, 2024 (NWF)

Sat Aug 24, 2024

Sat Aug 24, 2024 (NWF)

Sat Aug 24, 2024

Sat Aug 24, 2024

Colorado Half Marathons August 2024

Estes Park, CO

Arvada, CO

Boulder, CO

Fort Collins, CO

Steamboat Springs, CO

 

Georgetown, CO

Ouray, CO

Vail, CO

Erie, CO

Pine, CO

Durango, CO

Westminster, CO

Fraser, CO

Colorado Half Marathons September 2024

Mon Sep 2, 2024

Sat Sep 7, 2024 (T)

Sat Sep 14, 2024 (T)(NWF)

 

Sat Sep 14, 2024 (W)

Sat Sep 21, 2024 (T)

Sun Sep 22, 2024 (W)

Sun Sep 22, 2024

Sat Sep 21, 2024

Sat Sep 28, 2024

Sat Sep 28, 2024 (NWF)

Sat Sep 28, 2024 (T)

Sat Sep 28, 2024

Sun Sep 29, 2024 (T)

Mon Sep 30, 2024

Parker, CO

 

Fort Collins, CO

Nederland, CO

 

Buena Vista, CO

Granby, CO

Fort Collins, CO

Boulder, CO

Beulah, CO

Colorado Springs, CO

Westminster, CO

Louisville, CO

Snowmass Village, CO

Morrison, CO

Sterling, CO

Colorado Half Marathons October 2024

Sun Oct 6, 2024

Sun Oct 6, 2024

Sat Oct 12, 2024

Sat Oct 12, 2024

Sat Oct 15, 2022

Sun Oct 13, 2024 (W)

 

Sun Oct 27, 2024 (W)

Fort Collins, CO

Windsor, CO

Fort Collins, CO

Breckenridge, CO

Mancos, CO

Westminster, CO

 

Golden, CO

Colorado Half Marathons November 2024

Sat Nov 2, 2024 (T)

Mon Nov 11, 2024 (W)

Highlands Ranch, CO

Durango, CO

Colorado Half Marathons December 2024

Sat Dec 7, 2024 (W)

Sun Dec 3, 2023

Sat Dec 7, 2024 (W)

Westminster, CO

Pueblo, CO

Ute Mountain, CO

Colorado Half Marathon Calendar event dates in grey are delinquent dates not updated by the race organizer yet. We strive to have dates 1 year out for Colorado half marathons, but have no control of when they set, announce or update their dates.

Colorado Half Marathons

The Colorado Half Marathon Calendar is a complete simplistic listing of half marathons in Colorado. Currently the Colorado half marathon schedule has 2024 Colorado half marathons and 2025 Colorado half marathons as they roll in. Colorado half marathons 2024 & Colorado half marathons 2025 also identify 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 Colorado half marathon schedule of course features races such as Rock'n'Roll Denver Marathon and Rock'n'roll Denver Half marathon, along with a complete listing of Colorado half marathons, Denver half marathons, Ft. Collins half marathons, Colorado Springs half marathons, Boulder half marathons, Rocky Mountain half marathons, Vail half marathons, and many more half marathons in Colorado.

 

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.

Colorado half marathons 2024

Colorado half marathons 2025

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