Snow Mountain Ranch

SEP
12
2026
Snow Mountain Ranch in Granby, CO offers five trail distances from 5K to 50K at the YMCA of the Rockies, with varied out-and-back and looped courses on dirt trails. The 50K allows a pacer on the final loop and multiple aid stations support runners.
Sat 12 Sep 2026
50 kilometers 33 kilometers Half Marathon 10 kilometers 5 kilometers

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Snow Mountain Ranch Trail Running Festival

Snow Mountain Ranch Trail Running Festival is an annual trail event held at the YMCA of the Rockies in Granby, Colorado. The 12th edition features multiple race distances and two combined-event options called the Moosehead Challenge and the Baby Moose Challenge, which involve completing more than one event on the same day.

Event distances

  • 50K: 31.4 miles, 4,236 ft elevation gain, 100% dirt, three loops
  • 33K: 20.2 miles, ~2,443 ft elevation gain, dirt and grass trails, two loops
  • Half-Marathon: 12.8 miles, 1,707 ft elevation gain, 100% dirt, single loop
  • 10K: 6.1 miles, 653 ft elevation gain, 100% dirt, single loop
  • 5K: 3.3 miles, 405 ft elevation gain, 100% dirt, out-and-back

Course details vary by distance but include out-and-back layouts with lollipop sections, specified numbers of aid stations per route, and listed total elevation gains and maximum elevations. The 50K course reaches a maximum elevation of 9,844 feet and requires runners to begin the third loop by a specified cutoff to finish within the event time limit. Pacers are allowed on the 50K for the final loop only; pacers are not permitted for other distances. Crews are welcome to support runners at the finish.

Logistics note: the YMCA of the Rockies offers lodging options and on-site camping with utilities and shared facilities. The event provides drop bag access at the start/finish area and onsite parking near the Nordic Center. Visit the organization's website for the most recent information.

50 km
50k
33 km
33k
Half Marathon
Half-Marathon
10 km
5 km
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