Half Marathons in Colorado 2026 | Upcoming Races & Dates | My Next Race

There are 16 half marathons in Colorado scheduled for 2026. The next is the Runs With Scissors Races in Brighton on April 25. Colorado half marathons run primarily April through February.

Runs With Scissors Races

Sat, Apr 25 · Brighton, CO Brighton

Half MarathonMarathon50K Ultra Marathon +3

From $35 Open Closing Soon 35 spots left

Vallecito Lake Heavy Half

Sat, May 16 · Bayfield, CO Bayfield

Vallecito Lake Heavy Half Marathon

From $75 Open Closing Soon

Girls on the Run Rockies Colfax SoleMates 2026

Sun, May 17 · Denver, CO Denver

Colfax 1/2 MarathonColfax MarathonColfax Relay Team

From $25 Open 3 spots left

Steamworks Half Marathon

Sat, Jun 6 · Durango, CO Durango

1/2 Marathon

From $79 Open Closing Soon

Blue Sky Ascent & Round Trip (formerly the Mt. Evans Ascent)

Sun, Jun 28 · Idaho Springs, CO Idaho Springs

AscentRound-Trip

From $125 Open 75 spots left

Barr Trail Mountain Race

Sun, Jul 19 · Manitou Springs, CO Manitou Springs

Aid Station Challenge SponsorBTMR

From $75 Open Closing Soon 16 spots left

World Championship Pack Burro Race

Sun, Jul 26 · Fairplay, CO Fairplay

Short Course, approximately 12.3 milesLong Course, 29+ miles

From $70 Open

Bound for Boston Marathon & Half Marathon - Denver

Sun, Aug 2 · Denver, CO Denver

Half MarathonVirtual Half MarathonMarathon +1

From $25 Open

Staunton Rocks! Marathon and Half Marathon

Sat, Aug 22 · Pine, CO Pine

Staunton Rocks! Half MarathonStaunton Rocks! Marathon

From $90 Open

TBK Bank Thirsty 13 Half Marathon

Sat, Aug 29 · Durango, CO Durango

Just The Race -- No Brewfest TicketRace Plus Brewfest

From $85 Open

Black Squirrel Half Marathon

Sat, Sep 12 · Bellvue, CO Bellvue

Black Squirrel Half Marathon

From $90 Open

Pikes Peak Ascent

Sat, Sep 19 · Manitou Springs, CO Manitou Springs

Half Priced Award EntryAscent

From $87.5 Open

CG Adventure Club - Elevation Everest

Wed, Sep 23 · Winter Park, CO Winter Park

Basic Experience PackageAll-In Adventure PackageStarter Adventure Package

From $150 Open

Durango Marathon

Sun, Oct 11 · Durango, CO Durango

Durango Half MarathonDurango MarathonDurango Marathon Weekend 5k

From $20 Open

50 States Half Marathon Club General Membership

Fri, Feb 10 · Colorado Springs, CO Colorado Springs

50 States Half Marathon Club General Membership

From $85 Open

Fifty States Half Marathon Club Life Membership

Sat, Feb 11 · Colorado Springs, CO Colorado Springs

Fifty States Half Marathon Club Life Membership

From $429 Open