The Great Divide Ultra

JUN
6-7
2026
A weekend trail running festival in Mueller State Park offering 100 mile, 100k, 50k and 25k looped races on smooth single and double track. The event includes night running options, crew access at aid stations, shuttled parking for shorter races, and included race gear.
6-7 Jun 2026
100 miles 100 kilometers 50 kilometers 25 kilometers

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The Great Divide Ultra

The Great Divide Ultra is a weekend trail running festival in Divide, Colorado, held in early June. Distances offered include:

  • 100 mile
  • 100k
  • 50k
  • 25k

Races take place on looped routes inside Mueller State Park. The course is entirely smooth single and double track trail and passes spring-fed meadows, Pikes Peak granite formations, and wide mountain views. The 100 mile route is composed of six 14.8 mile loops and one 10.5 mile loop. Aid stations are spaced about 4.3 to 6.1 miles apart, are crew accessible, and allow drop bags.

Reported elevation range for the courses is 9,189 feet to 9,743 feet. Approximate elevation gains provided are 16,071 feet for the 100 mile, 8,500 feet for the 100k, 4,200 feet for the 50k, and 2,100 feet for the 25k. The 100 mile event uses a 36 hour overall cutoff.

Logistics note that 100 mile, 100k, and the night run use parking near the Livery and equestrian areas. 50k and 25k runners and crew are directed to park at John Wesley Ranch and are shuttled to the start and back to vehicles. Registration closes on June 3. Registration items include a gender specific race shirt, a BOCO trucker hat, a personalized bib, finishers awards, and a post race meal. Visit the organization's website for the most recent information.

100 mi
100 Mile
100 km
100k
50 km
50k
25 km
25k