Half marathons in Colorado, United States
Find half marathons 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 Colorado Cold Rush Ultra, Stories Trail Runs and Valkyrie Trail Race.
9 listed events · 8 with upcoming dates
Upcoming half marathons
8 matching events, earliest date first. Entry availability is shown separately.
Colorado Cold Rush Ultra
USAColorado Springs, Colorado
Trail races from Bear Creek Regional Park, with longer routes climbing historic High Drive above Colorado Springs.
· Half marathon
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.
· Half marathon
Race details, entry and past editions →Entry information ↗Valkyrie Trail Race
USAColorado Springs, Colorado
Women-focused trail races in Cheyenne Mountain State Park.
· Half marathon
Race details, entry and past editions →Entry information ↗Endure Trail Runs (Colorado)
USADivide, Colorado
Fixed-distance trail races on singletrack and doubletrack in Mueller State Park.
· Half marathon · Status TBC
Race details, entry and past editions →Summits Trail Runs
USAGranby, Colorado
Mountain trail races at Granby Ranch Resort, with shorter races and ultra distances.
· Half marathon · Status TBC
Race details, entry and past editions →Rocky Mountain Half Marathon and 5K
USAEstes Park, Colorado
Road races based at Lake Estes, with a Friday 5K and Saturday half marathon.
· Half marathon · Status TBC
Race details, entry and past editions →Sheep Mountain Trail Runs
USAFairplay, Colorado
Mountain trail races and a half marathon based at Fairplay Beach.
· Half marathon · 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.
· Half marathon · 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.
Wheat Ridge Half Marathon
USAWheat Ridge, Colorado
Wheat Ridge Half Marathon in Wheat Ridge.
Next date not listed
Race guide and recorded editions →Choosing a race in Colorado
The unfiltered upcoming calendar includes events in Colorado Springs (3), Granby (2), Divide (1). Use the town filter to compare locations, then check the race guide for the start venue and organiser’s travel information.
Questions about half marathons in Colorado
Which half marathons are coming up in Colorado, United States?
Colorado Cold Rush Ultra is listed for 21 November 2026. Stories Trail Runs is listed for 7 February 2027. Valkyrie Trail Race is listed for 8 May 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.