The Great Divide Ultra

Divide, United States • 6-7 Jun 2026

Event overview

The Great Divide Ultra is a trail running festival in Divide, Colorado on June 6-7, 2026. Distances offered include a looped 100 mile race plus 100k, 50k, and 25k options. The event takes place entirely inside Mueller State Park and uses smooth single- and double-track trails. Registration closes June 3; pack pickup is scheduled the day before the race at Colorado GearLab in Woodland Park.

  • 100 mile
  • 100k
  • 50k
  • 25k

Course, aid stations and logistics

The 100 mile course comprises six 14.8-mile loops and one 10.5-mile loop. Reported elevation range on the course is 9,189 to 9,743 feet. Elevation gain figures given are 16,071' for the 100 mile, 8,500' for the 100k, 4,200' for the 50k, and 2,100' for the 25k. Aid stations are crew accessible, allow drop bags, and are spaced about 4.3 to 6.1 miles apart; some aid stations will offer warm food in addition to gels, drinks, and snacks. The 100 mile race uses a 36-hour cutoff. Crew access is concentrated at the Livery (start/finish) and Hart-Lee Homestead aid stations; pacing is permitted for the 100k (final lap or after sunset) and the 100 mile (from mile 44.4) under event rules. Parking and shuttles operate from the John Wesley Ranch for most runners; Mueller State Park offers reserved campsites and on-site cabins. Nearest airports listed are Colorado Springs and Denver. Participants are advised to prepare for variable mountain weather. Visit the organization's website for the most recent information.

Race information

100 mi
100 Miler
100 km
100k
50 km
50k Sun
50 km
50k Night
50 km
50k Sat
25 km
25k Sun
25 km
25k Sat
25 km
25k Night
Visit the organization's website for the most recent information.
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