from $75
RegisterColorado race calendar
Triathlons and bike races in Colorado
16 upcoming races across 12 cities in Colorado, from first-timer sprint triathlons to half iron races, duathlons, and gravel rides. Dates, distances, and entry fees come straight from race registration and refresh every night.
16
upcoming races
2
this weekend
12
cities
4
triathlons
By distance
By month
Next up in Colorado
The 16 soonest races. Pick a month or distance above for the full list.
October 2026
December 2026
Chasing Santa 5k/Cycling Santa Toy Drive Presented by: Springs Law Group
Colorado Springs, Colorado9:00 AM start
from Free
RegisterJanuary 2027
ALMAGEDDON Winter Triathlon presented by the Alma Foundation
Alma, Colorado9:00 AM startOpen water swim
from $65
RegisterFebruary 2027
from $65
RegisterMarch 2027
from $205
RegisterMay 2027
from $200
RegisterJune 2027
from $85
RegisterRace in the Clouds - Alma Dirt Festival 2027
Alma, Colorado1:30 PM startTrail
from Free
RegisterJuly 2027
from $75
RegisterAugust 2027
from $25
RegisterSeptember 2027
from Free
Register2027 Lake Nighthorse Triathlon - Sprint and Olympic
Durango, Colorado8:30 AM startOpen water swim
from $85
Register