Rock Hawk
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Rock Hawk Trail Races : Castle Rock, CO
The Rock Hawk Trail Races take place on Saturday, August 29, 2026, at Philip S. Miller Park in Castle Rock, Colorado. The event offers these distances:
- 50K - 31.2 miles
- 25K - 15.6 miles
- 10K - 6.2 miles
- 5K - 3.1 miles
The races run on the Miller Park and Ridgeline Trail systems.
Course details, support and rules
The trails are described as rolling and not overly technical, with scenic views. Time limits and elevation data by distance are provided: the 50K has 3,325 feet total elevation gain and a 9-hour limit; the 25K has 1,667 feet gain and an 8-hour limit; the 10K has 744 feet gain and a 3.5-hour limit; the 5K has 342 feet gain and a 3-hour limit. Maximum elevation on courses is listed around 6,600+ feet.
There are two cup-free aid stations on course serving water, electrolyte drink (Tailwind), sweet and salty snacks, and fruit. Drop bags are permitted at the start/finish in weather-sealed bags. Crew and pacer rules vary by distance: crew is allowed at the start/finish for some distances; the 25K does not allow crew except as registered aid-station volunteers, and pacers for that distance must carry required gear and complete a gear check. Live split tracking is available during race weekend. Visit the organization's website for the most recent information.