The Great Divide Ultra
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Event details
The Great Divide Ultra takes place June 6-7, 2026 in Divide, Colorado. The festival includes the following distances:
- 100 mile
- 100k
- 50k
- 25k
The 100 mile is noted as the first 100 miler on the Colorado calendar. Registration closes on June 3. Pack pickup is scheduled for Friday, June 5 at Colorado GearLab, 108 W Midland Ave, Woodland Park. Registrations include a gender-specific race shirt, a trucker hat, a personalized bib and finishers’ award, and a belt buckle for 100 mile and 100k finishers. A post-race meal is provided.
Course and logistics
All races take place on looped trails inside Mueller State Park on smooth single and double-track. The 100 mile course is made up of six 14.8 mile loops and one 10.5 mile loop. Elevation range on course is 9,189' to 9,743'. Published elevation gains: 100 mile about 16,071', 100k about 8,500', 50k about 4,200', and 25k about 2,100'. Aid stations are spaced roughly 4.3 to 6.1 miles apart, are crew accessible, and allow drop bags. Aid station food includes Tailwind, Muir Energy gels, sweet and salty snacks, fruit, and soda; two stations will offer warm cooked options. Crew access is allowed for all distances at the Livery and Hart-Lee Homestead aid stations. Pacers are allowed for the 100 mile and 100k with specified location rules. Parking for 50k and 25k is at John Wesley Ranch with shuttle service to the start; parking for 100 mile, 100k, and the night run is at the Livery and equestrian lots. Visit the organization's website for the most recent information.