Colorado race calendar
Running races in Colorado
303 upcoming races across 60 cities in Colorado, from neighborhood 5Ks to marathons and trail ultras. Dates, distances, and entry fees come straight from race registration and refresh every night.
303
upcoming races
28
this weekend
60
cities
103
half marathons
Thanksgiving 2026
Turkey Trots in Colorado
28 turkey trots on and around Thanksgiving Day, Thursday, November 26, with start times, distances, entry fees, and the races that fill up first.
By distance
By month
Next up in Colorado
The 30 soonest races. Pick a month or distance above for the full list.
September 2026
October 2026
Segment Traildown
Fort Collins, Colorado
from Free
RegisterColorado Springs Marathon, Half, 5K, and Kids K
Colorado Springs, Colorado7:00 AM start
from Free
Registerfrom Free
RegisterRim to Rim Royal Gorge Races: 5K Road Run, Trail 8 Mile, Trail Half Marathon
Canon City, Colorado7:30 AM startTrail
from Free
Register
from $50
Registerfrom Free
Registerfrom $80
Register
from $25
Register
from $10
Register
from Free
Register
from $110
Register
from Free
Register
from $30.75
Register
from $50
Register
from $25
Register
from $15
Register
from $25
Register
from $40
RegisterWindsor Marathon, Half Marathon, 10k, 5k & 1 Mile Run
Windsor, Colorado7:00 AM start
from $20
Register
from Free
Register
from $10
Register
from $10
RegisterLiberty Energy 5K - Benefiting the Bettering Human Lives Foundation
Denver, Colorado9:45 AM start
5KKids
from Free
Register
from $39
Register
from $60.38
RegisterKids' Fall Series - Where Kids Run Free!
Colorado Springs, Colorado11:30 AM start
from Free
Register