10K races in Colorado, United States
Find 10k races in Colorado, United States. Compare 8 upcoming events by date and location. Open a race guide for the course, recorded editions and official entry information where available.
Events to explore include Bridge Burner Ultra, Colorado Cold Rush Ultra and Stories Trail Runs.
8 listed events · 8 with upcoming dates
Upcoming 10k races
8 matching events, earliest date first. Entry availability is shown separately.
Bridge Burner Ultra
USACanon City, Colorado
Trail races through the Royal Gorge area, starting in Canon City and following riverside paths and mountain trails.
· 10K
Race details, entry and past editions →Entry information ↗Colorado Cold Rush Ultra
USAColorado Springs, Colorado
Trail races from Bear Creek Regional Park, with longer routes climbing historic High Drive above Colorado Springs.
· 10K
Race details, entry and past editions →Entry information ↗Stories Trail Runs
USAColorado Springs, Colorado
A weekend of timed and fixed-distance winter trail races at Cheyenne Mountain State Park.
· 10K
Race details, entry and past editions →Entry information ↗Rattler Trail Race
USAColorado Springs, Colorado
Trail races from Palmer Park in Colorado Springs.
· 10K · Status TBC
Race details, entry and past editions →Endure Trail Runs (Colorado)
USADivide, Colorado
Fixed-distance trail races on singletrack and doubletrack in Mueller State Park.
· 10K · Status TBC
Race details, entry and past editions →BOLDERBoulder
USABoulder, Colorado
Boulder’s Memorial Day 10K.
· 10K
Race details, entry and past editions →Entry information ↗Rock Hawk Trail Races
USACastle Rock, Colorado
Trail races on the Miller Park and Ridgeline trail systems.
· 10K · Status TBC
Race details, entry and past editions →Snow Mountain Ranch Trail Running Festival
USAGranby, Colorado
Trail races on Nordic tracks at Snow Mountain Ranch.
· 10K · Status TBC
Race details, entry and past editions →Race archive
Past races and previous editions
Looking back at a race? Browse the guides below for recorded editions. This section also includes events awaiting a new date and cancelled editions. Previous editions of races in the upcoming calendar are available through their race guides above.
No separate archived race guides are listed for this selection yet.
View full race archive (0) →Choosing a race in Colorado
The unfiltered upcoming calendar includes events in Colorado Springs (3), Boulder (1), Canon City (1). Use the town filter to compare locations, then check the race guide for the start venue and organiser’s travel information.
Questions about 10k races in Colorado
Which 10k races are coming up in Colorado, United States?
Bridge Burner Ultra is listed for 24 October 2026. Colorado Cold Rush Ultra is listed for 21 November 2026. Stories Trail Runs is listed for 7 February 2027. Check the race guide and organiser’s latest information before making plans.
Where can I find race entry details for Colorado, United States?
Follow the link from the race guide to the organiser or entry provider, where one is available. Check the entry deadline, eligibility and current availability there. A listed race date does not necessarily mean entries are still open.
Why has a race moved out of the upcoming calendar?
Once its listed dates have passed, a race moves to the past-editions view unless another upcoming edition is recorded. Cancelled events also leave the upcoming list. The race guide stays available, and the event returns when a new date is added.