North Fork 50 Mile

MAY
22
2027
Trail ultramarathon in Buffalo Creek, Colorado offering 50 Mile and 50K courses on 100% soft-surface singletrack with staffed aid stations and limited crew access.
Sat 22 May 2027
50 miles 50 kilometers

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North Fork 50 : Buffalo Creek, Colorado

The North Fork 50 is a weekend trail ultramarathon held on May 22, 2027 in Buffalo Creek, Colorado. The event offers two distances and takes place on trails within the Buffalo Creek Recreation Area and Pike National Forest.

  • 50 Mile - 50 miles; 6,425 ft total climb; max elevation 8,535 ft.
  • 50K - 31.1 miles; 3,670 ft total climb; max elevation 8,150 ft.

Both courses are 100% soft surface, made up almost entirely of singletrack with a few short double-track sections. Runners pass through areas burned in the 1996 Buffalo Creek fire, open ponderosa pine forest, and granite rock formations. The 50K is a single-loop course.

The event uses multiple staffed aid stations with hydration and food at major points; water-only stations appear early on the courses. Drop bags are available at the Buffalo aid station. Crew access is restricted to Buffalo aid station only; crew must park inside Meadows Group Campground and walk to the aid area. Parking near Buffalo Aid is limited and road parking is prohibited. Pacers are not allowed, but friends or family may run the final mile along Buffalo Creek Road with a runner.

Course markings include orange-and-black polka-dot ribbons and orange pin flags, with reflective markers where night running is possible. All finishers receive a commemorative award; special awards recognize top three male and female finishers in each distance. Portions of race proceeds support the North Fork Volunteer Fire Department, ProjectPurple.org, and Conifer's StageDoor Theatre. Visit the organization's website for the most recent information.

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