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Half Marathons Found In Denver, Colorado
View all ↓Half Marathons in & near Denver, Colorado 2025 - 2026
The most comprehensive list of Half Marathons in and near Denver, Colorado in 2025 - 2026. Find your perfect race!
Race Calendar: Half Marathons Found In Denver, Colorado
Denver, CO Galloway Training Program
Denver, Colorado
20 Apr 24 - 15 Apr 25
$91.10 - $274.00
Fifty States Half Marathon Club General Membership
Colorado Springs, Colorado
02 May 24 - 02 Apr 34
$91.10
Ralston Creek Half Marathon & 5k
Arvada, Colorado
14 Dec 24 - 16 Feb 25
$27.50 - $170.60
Slacker Half Marathon-Relay-4-Mile Races
Georgetown, Colorado
01 Jan 25 - 27 Jun 25
$38.10 - $80.50
Chilly Willy 5K/10K/Half Marathon-Colorado Springs
Colorado Springs, Colorado
25 Jan 25
$36.60 - $67.85
Chilly Willy 5K/10K/Half Marathon - Denver
Littleton, Colorado
26 Jan 25
$36.60 - $67.85
Arctic Prairie Dog Half, 10k & 5k
Louisville, Colorado
26 Jan 25
$45.00 - $85.00
Super Half Marathontrade mark & Game Day 5Ktrade mark Presented by Toyota
Colorado Springs, Colorado
09 Feb 25
$43.40 - $80.50
Stories Trail Runs
Colorado Springs, Colorado
15 Feb 25 - 16 Feb 25
$85.80 - $202.40
All-Out Mardi Crawl
Arvada, Colorado
22 Feb 25
$43.40 - $80.50
2025 Team CKF Running Series
Aspen, Colorado
22 Feb 25 - 25 Oct 25
Free
Time to Paddy 5k/10k & Lucky 13.1 - Denver
Morrison, Colorado
01 Mar 25
$18.83 - $63.34
Time to Paddy 5k/10k & Lucky 13.1 - Colorado Springs
Colorado Springs, Colorado
02 Mar 25
$18.83 - $63.34
20th Annual Run Through Time Trail Marathon and Half Marathon
Salida, Colorado
08 Mar 25
$16.90 - $96.40
All-Out Spring Fever
Golden, Colorado
23 Mar 25
$43.40 - $80.50
Spring Equinox
Wellington, Colorado
23 Mar 25
$39.03 - $97.60
Spring Fling Prairie Dog Half, 10k, & 5k
Arvada, Colorado
13 Apr 25
Free - $80.00
Platte River Half-Marathon and Relay
Littleton, Colorado
13 Apr 25
$96.40 - $207.70
Horsetooth Half Marathon
Fort Collins, Colorado
13 Apr 25
$112.30
Three Creeks Half Marathon
Englewood, Colorado
13 Apr 25
$75.20 - $107.00
Great Western Trail Race
Severance, Colorado
19 Apr 25
$16.90 - $69.90
All-Out Beat the Heat
Westminster, Colorado
19 Apr 25
$43.40 - $80.50
Runs With Scissors Races
Brighton, Colorado
26 Apr 25
$38.10 - $92.16
Bigfoot Half Marathon
Estes Park, Colorado
26 Apr 25
$54.75 - $118.95
The Colorado Marathon
Fort Collins, Colorado
04 May 25
$48.70 - $379.00
Longmont Half & 5k (LM Half)
Longmont, Colorado
04 May 25
$45.00 - $70.00
DoNot Stop Half Marathon (5k/10k) - Denver
Littleton, Colorado
10 May 25
$18.83 - $48.28
Donot Stop Half Marathon (5k/10k) - Colorado Springs
Colorado Springs, Colorado
11 May 25
$18.83 - $48.28
Endure Trail Runs
Divide, Colorado
17 May 25 - 18 May 25
$75.20 - $191.80
Colorado 13er (Half Marathon/10k/5k)
Louisville, Colorado
01 Jun 25
$33.50 - $64.60
All-Out Summer Breeze
Arvada, Colorado
07 Jun 25
$32.80 - $69.90
Hometown Half Marathon & 5k/10k - Denver
Westminster, Colorado
21 Jun 25
$18.83 - $48.28
Red, White and Brew 5k, 10k, Half Marathon & 12 Hour Last Person Standing
Windsor, Colorado
21 Jun 25
$16.90 - $101.70
Hometown Half Marathon & 5k/10k - Colorado Springs
Colorado Springs, Colorado
22 Jun 25
$18.83 - $48.28
The Alma Foundation Race in the Clouds Dirt Festival
Alma, Colorado
10 Jul 25 - 13 Jul 25
Free - $69.90
All-Out Dog Days
Westminster, Colorado
12 Jul 25
$27.50 - $64.60
Aspen Valley Marathon
Aspen, Colorado
19 Jul 25
Summer Splash Prairie Dog Half, 10k, & 5k
Castle Rock, Colorado
19 Jul 25
$40.00 - $80.00
Rocky Mountain Half Marathon & 5K
Estes Park, Colorado
01 Aug 25 - 02 Aug 25
Free - $193.47
Sheep Mountain Trail Runs
Fairplay, Colorado
02 Aug 25
$96.40 - $181.20
Showing 1-40 of 70 results