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Colorado half marathons

Half Marathons in Colorado

103 upcoming half marathons in Colorado listed by date, with cities, start times, and entry fees. Find a half marathon near you and register.

103
upcoming races
8
cities with 3+
2:12:38
typical finish

Other distances

October 2026

November 2026

December 2026

January 2027

Half marathon results in Colorado

From 95 half marathons with official results in the last two years, 21,860 finishers in all.

Typical half marathon times by age and gender

2:12:38
typical finish
10:07 /mi
typical pace
112
finishers in a typical race
2:19:55
women, typical finish
2:03:31
men, typical finish
under 1:43:28
the fastest tenth

Entry for upcoming half marathons in Colorado usually runs from $45 to $74, with a typical fee of $60 before processing fees.

Typical times are the middle finisher across these races, weighted by field size. School meets, stair climbs, and results with timing errors are left out.

Fastest half marathons in Colorado

  1. 1Lucky Brew Race 5K, 10K, 15k & Half MarathonSeverance · median 1:54:46 · 77 finishers in 2026
  2. 2Choice City Running FestivalFort Collins · median 2:00:55 · 117 finishers in 2026
  3. 3All-Out Fa La LaWestminster · median 2:05:01 · 187 finishers in 2025
  4. 4All-Out Polar ProwlArvada · median 2:05:12 · 89 finishers in 2026
  5. 5Platte River Half-Marathon, Relay & 5kLittleton · median 2:07:06 · 641 finishers in 2026

Biggest half marathons in Colorado

  1. 1Horsetooth Half Marathon - Presented by Fort Collins ConnexionFort Collins · 1,926 finishers in 2026
  2. 2The Colorado MarathonFort Collins · 1,333 finishers in 2026
  3. 3Fall EquinoxFort Collins · 838 finishers in 2026
  4. 4The Steamboat MarathonSteamboat Springs · 833 finishers in 2026
  5. 5Platte River Half-Marathon, Relay & 5kLittleton · 641 finishers in 2026
When half marathons happen in Colorado