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Greenland Trail Races

Larkspur, United States • 2 May 2026

The Greenland Trail Races, held annually in May at Greenland Open Space in Larkspur, Colorado, offer four race distances: 4 miles, 8 miles, 25K, and the 50K ultramarathon, known as Colorado's fastest 50K. The course features wide, smooth dirt trails through native grasslands, oak hills, and ponderosa pine forests, with scenic views of Pikes Peak. The 50K and 25K races involve multiple loops of a course that includes a high point at 7,400 feet. Participants enjoy a festive atmosphere with fully stocked aid stations, professional chip timing, finisher medals, technical shirts, and post-race pizza and beer. The event is beginner-friendly and supports virtual participation. Visit the organization's website for the most recent information.

United States Colorado Larkspur

Race information

Website
50 km
50k
25 km
25k
8 mi
8 Mile
4 mi
4 Mile
Visit the organization's website for the most recent information.
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