Quad Rock 50
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Event overview
The Quad Rock 25 & 50 Mile Trail Races take place May 9, 2026, on trails west of Fort Collins in Lory State Park and Horsetooth Mountain Park, Colorado. The course is a 25-mile loop with a second loop run in reverse for the 50-mile distance. Key facts:
- 25 miles : ~5,500 ft vertical gain
- 50 miles : ~11,000 ft vertical gain
Min/max elevation is listed as 5,444 ft / 7,087 ft and average elevation is 6,200 ft. Terrain is approximately 85% singletrack and 15% dirt road. Registration is capped at 450 total entrants (200 for the 50-mile and 250 for the 25-mile). Entries are non-refundable and non-transferable except via the wait list; the race offers transfer credit and deferral options under stated deadlines.
Course, aid and rules
The first 25-mile loop runs clockwise from Soldier Canyon; 50-mile runners complete a second loop in the opposite direction. The course is marked with pink flagging, pin flags, flour at key intersections and confidence flagging on longer stretches.
Aid station provision includes multiple staffed, full-service stations and two limited stations (Timber - unmanned water only; Arthur's East - limited aid). Full stations carry sports drink, gels/bars, water and ice, salty snacks, fruit, sweets, hot drinks, sandwiches and some hot foods; GF/vegan alternatives are available for most offerings. Drop bags are allowed at Horsetooth Trailhead and Soldier Canyon. Permanent restrooms are at Soldier Canyon, Arthur's and Horsetooth trailheads; additional portable toilets will be at the start/finish. Pacers are not allowed; crewing is permitted only at designated aid stations. Dogs are not allowed on course. Visit the organization's website for the most recent information.
