Marathons in Colorado 2026 | Upcoming Races & Dates

There are 6 marathons in Colorado scheduled for 2026. The next is the Mission Crew Miles in Anywhere on January 1. Colorado marathons run primarily January through August.

Breckenridge RunFest

Sat, Oct 10 · Breckenridge, CO Breckenridge

Kids & Family Mile5K10K +2

From $25 Open Closing Soon

The Long View Marathon

Sat, Oct 10 · Fort Collins, CO Fort Collins

The Long View 5kThe Long View Half MarathonThe Long View Marathon

From $35 Open Closing Soon

Mission Crew Miles

Fri, Jan 1 · Anywhere, CO Anywhere

Mission Crew Miles Together

From $37 Open

Alley Loop

Sat, Jan 30 · Crested Butte, CO Crested Butte

1.5K Freestyle | Kids Race3K Freestyle | Kids Race5K Freestyle +6

From $25 Open 15 spots left

Gothic Mountain Tour

Sun, Feb 14 · Crested Butte, CO Crested Butte

Recreational CourseCompetitive Course

From $100 Closed 95 spots left

The Colorado Marathon

Sun, May 2 · Fort Collins, CO Fort Collins

2027 10k5K5K +9

From $35 Open

The Steamboat Marathon

Sun, Jun 6 · Steamboat Springs, CO Steamboat Springs

10K10KHalf Marathon +3

From $65 Open

Bound for Boston Marathon & Half Marathon - Denver

Sun, Aug 1 · Denver, CO Denver

Half MarathonVirtual Half MarathonHalf Marathon +5

From $25 Closed

Marathons in Colorado — 2026

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