The Great Divide Ultra
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The Great Divide Ultra : Mueller State Park, Divide Colorado
The Great Divide Ultra is a multi-distance trail running festival held June 6-7, 2026, in Divide, Colorado, inside Mueller State Park. Distances offered include:
- 100 mile
- 100k
- 50k
- 25k
The course is looped and run entirely on smooth single and double-track trails through spring-fed meadows and Pikes Peak granite formations. The 100 mile course is composed of six 14.8 mile loops plus one 10.5 mile loop. Elevation range on course is 9,189 to 9,743 feet. Reported elevation gain examples: 100 mile ~16,071 feet, 100k ~8,500 feet, 50k ~4,200 feet, 25k ~2,100 feet.
Aid stations are crew accessible, allow drop bags, and are spaced roughly 4.3 to 6.1 miles apart. Stations provide Tailwind, Muir Energy gels, sweet and salty snacks, fruit, soda, and many offer warm options such as bacon, quesadillas, and potatoes. A 36 hour cutoff applies to the 100 mile event. Crew access is allowed at the Livery and Hart-Lee Homestead aid stations; each 100 mile and 100k entry receives one crew pass. Pacing is permitted for 100 mile and 100k with specific rules for when pacers may join.
Packet pickup is scheduled the day before at Colorado GearLab, 108 W Midland Ave, Woodland Park. Registration closes on June 3. Weather at event time can be variable; average highs are in the mid 60s and lows in the mid 40s. Mueller State Park offers 132 campsites by reservation and cabin rentals within the park. Visit the organization's website for the most recent information.
