from $105
RegisterSpring 2027
Summer Triathlons in Colorado
5 summer triathlons in Colorado from June to August 2027. Race days typically run from 49°F at dawn to 76°F in the afternoon. Dates and fees come straight from race registration and refresh every night.
5
summer triathlons
4
cities
76°F
typical race-day high
n/a
typical entry fee
June 2027
from $120
RegisterJuly 2027
Boulder Peak Triathlon
Boulder, Colorado7:15 AM startOpen water swim
from $115
Registerfrom $115
RegisterAugust 2027
Stagecoach Gravel Triathlon
Oak Creek, Colorado8:05 AM startTrailOpen water swim
from $110
RegisterQuick answers
- When are summer triathlons in Colorado?
- The season runs June to August. The busiest month is June, with 2 of the 5 races listed here; July has 2 and August has 1.
- What is the weather like for summer triathlons in Colorado?
- Across 5 of these races, race day typically runs from about 49°F at dawn to 76°F in the afternoon, with rain on about 17 percent of days. Most start early, close to the low.
- How much does a summer sprint triathlon cost?
- Current entry fees in Colorado usually run from $113 to $126, with a typical fee of $118 before processing fees. Most raise prices as race day nears.