Greenland Trail 50K
Greenland Trail 50K runs four laps of smooth doubletrack across a Colorado open space, a fast and runnable spring ultra with Pikes Peak in view all day.
Every link above goes to the race, its timing provider, or an official registration partner. Last checked July 24, 2026.
Quick facts
- Four laps of a rolling doubletrack loop with a 7,400-foot high point.
- Wide, smooth trails make it one of Colorado's faster and friendlier first 50Ks.
- Has hosted RRCA regional and national 50K championship races.
- Race morning also includes 25K, 8 mile, and 4 mile options.
2027 Greenland Trail 50K registration
Registration for the 2027 Greenland Trail 50K runs through the official registration page at runsignup.com.
About the Greenland Trail 50K
One of the Front Range's most approachable first ultras, the Greenland Trail 50K has run on the Greenland Open Space in southern Douglas County since 2005, when the trails were brand new. Colorado Runner Events organizes the race, which has carried RRCA championship designations at the regional and national level, and the same morning offers 25K, 8 mile, and 4 mile races for anyone not ready for four laps.
Course
The 50K covers four laps of a rolling doubletrack loop through native grasslands, Gambel oak hills, and the edges of ponderosa pine forest, topping out at a 7,400-foot saddle around mile five of each lap. The wide, smooth surface keeps the course fast and honest, and aid stations near miles 3.5 and 7.5 of every loop simplify fueling. Pikes Peak and the surrounding buttes stay in view for most of the day.
Race-day weather
Early May on the Palmer Divide swings hard. Mornings often start in the 30s with a warm, sunny finish possible by noon, but wind is common across the open grassland and late spring snow or cold rain shows up some years. Dressing in layers beats trusting the forecast.
Past Greenland Trail 50K dates and results
| Year | Date | Status | Results |
|---|---|---|---|
| 2027 | Saturday, May 1, 2027 | Upcoming | — |
Greenland Trail 50K FAQ
When is the Greenland Trail 50K?
The 2027 Greenland Trail 50K is on Saturday, May 1, 2027.
How do I register for the Greenland Trail 50K?
Register for the Greenland Trail 50K through the official registration link: marathonscout.com/go/greenland-trail-50k/register. It opens the race registration page at runsignup.com.
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