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Summer Splash Prairie Dog Half, 10k, & 5k

📅 July 17, 2027 (estimated date)📍 Castle Rock · United States

⚠️ 2027 edition: provisional information

The date is estimated from the 2026 edition (July 18, 2026), on the same day of the week. Courses, start times, fees and description are carried over from the previous edition: check them on the official website. This page will be updated as soon as the organizer publishes them.

Available distances

13.1 mi6.2 mi3.1 mi

About

The Summer Splash Prairie Dog Half, 10k, & 5k in Castle Rock, Colorado, is part of the larger Prairie Dog Race Series and takes place along the East Plum Creek Trail on July 17, 2027. The half marathon (13.1 miles / 21.1 km) starts at 6:30 a.m., followed by the 10K (6.2 miles) and 5K (3.1 miles) at 7 a.m.

Starting from Castle View High School, participants follow paved paths on an out-and-back course with panoramic views of wetlands and prairie. The event suits both runners and walkers, and hydration stations are provided. Registered participants receive a goodie bag, an event-themed T-shirt, a finisher pint glass, professional race photos and a medal for finishing within the time limit.

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