The season, in order
Events by date
Listed chronologically through the season. The gold badge marks the ones I've personally raced or ridden.
Early FebLyons
Old Man Winter Rally
Boulder County
A cold-weather gravel tradition in the hills northwest of Boulder, with 23, 40, and 75-mile ride options plus a trail run.
Late JuneSteamboat Springs
Rode it
Event site ↗
SBT GRVL
Routt County
Colorado's marquee gravel weekend — up to four courses on the region's "champagne gravel" roads, plus a two-day expo on Yampa Street. Sells out quickly, so register the moment it opens.
Mid-JulyNederland
Rode it
Details ↗
Ned Gravel
Boulder County
A local favorite climbing into the mountain town of Nederland — part of Boulder County's packed summer gravel calendar, and a great warm-up for bigger races later in the season.
Mid-JulyFort Collins
Rode it
Event site ↗
FoCo Fondo
Fort Collins — "Gravel Graceland"
Northern Colorado's biggest gravel weekend, starting and finishing at New Belgium Brewing. Five distances from 12 to 118 miles, a big festival atmosphere, and some of the most accessible gravel in the state.
Early AugWinter Park
Crooked Gravel
Grand County
High-alpine gravel with 30 and 67-mile course options, over 5,000 feet of climbing, and wide-open descents under the Colorado sky.
Mid-SeptSalida
Rode it
Event site ↗
Salida 76
Salida — Riverside Park start/finish
76 miles (or a 76km "Lite" option) of remote, high-plains Chaffee County gravel with about 7,000 feet of climbing. Part of the Salida Bike Fest weekend, produced by the nonprofit Shift Events.
Late SeptTrinidad
The Rad Dirt Fest
Spanish Peaks region
A Life Time gravel race through the Spanish Peaks with 40, 70, and 110-mile course options, plus UNBOUND Gravel qualifying spots on the line.
VariesStatewide
Full Colorado gravel & MTB calendar
Statewide
A more complete, regularly-updated list of Colorado gravel and mountain bike events if you're planning a season around it.
Event dates listed reflect the most recently confirmed schedule at the time this page was written. Always double-check the organizer's site for the current year's date, course, and registration window.