Summer Splash Prairie Dog Half, 10k, & 5k
Summer Splash Prairie Dog Half, 10k, & 5k is listed for July 18, 2026 in Castle Rock, Colorado, United States. Listed distances: Half Marathon, 10K, 5K. Confirm the date, registration and travel details with the official organizer before you book.
About this race
RunSignup listed events: Half Marathon - running_race - 13.1 Miles; 10k - running_race - 10K; 5k - running_race - 5K. Welcome to the Summer Splash Prairie Dog Half, 10k & 5k in Castle Rock, Colorado. Part of the Prairie Dog Half race series, join us in July as we race through Castle Rock along the East Plum Creek Trail. For all race info, click the "race info" tap (or the links at the bottom)!
Key facts
- Date
- July 18, 2026
- Events
- Half Marathon, 10K, 5K
- Surface
- Trail
- Official source
- Registration page & official site
- Listing status
- updated May 23, 2026
Before you register
- 1Confirm the race-day schedule
Verify the July 18, 2026 start times, packet pickup (collecting your race bib) and corral (your assigned start group) instructions on the official source before booking travel.
- 2Pin the exact start area
Use Colorado as the planning region, then confirm the precise start, finish, parking and transport with the organizer.
- 3Pick your distance
Listed options are Half Marathon, 10K, 5K. Check the source for current per-distance availability and limits.
- 4Review entry terms
Read entry rules, refund terms, participant limits and transfer rules before you pay.
Runner reviews
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