Rock Hawk
Castle Rock, United States • 29 Aug 2026
Rock Hawk Trail Races : Castle Rock, CO
The Rock Hawk Trail Races take place Saturday, August 29, 2026, at Philip S. Miller Park (1375 W Plum Creek Pkwy) in Castle Rock, Colorado. The event offers four distances: 50K, 25K, 10K and 5K. Registration closes Monday, August 24 at 11:59 PM MT; a race goodie is guaranteed for registrations completed by August 10. Live split tracking is provided during the race weekend. A portion of proceeds benefits Castle Rock open spaces and partner charities.
Course and race services
The courses use Castle Rock’s Miller Park and Ridgeline Trail systems. Trails are described as not overly technical. Race support and logistics include:
- 50K - 31.2 miles, 3,325 ft total elevation gain, 9-hour time limit, max elevation 6,635 ft.
- 25K - 15.6 miles, 1,667 ft gain, 8-hour time limit, max elevation 6,635 ft.
- 10K - 6.2 miles, 744 ft gain, 3.5-hour time limit, max elevation 6,612 ft.
- 5K - 3.1 miles, 342 ft gain, 3-hour time limit, max elevation 6,578 ft.
There are two cup-free aid stations on course offering water, an 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; for the 25K the permit does not allow crew assistance unless the person is working a volunteer shift, and pacers must carry required gear and pass a gear check. Visit the organization's website for the most recent information.