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)!
Jul 17, 2027
Distance — 21.1K
Type — Running
06:30
$74.00
Jul 17, 2027
Distance — 10K
Type — Running
07:00
$44.00
Jul 17, 2027
Distance — 5K
Type — Running
07:00
$39.00
These values represent the 3-year monthly averages for July in Castle Rock.
Learn more about the host city, Castle Rock.
Castle Rock is a town of about 81,000 in the Denver Metropolitan Area of the western U.S. state of Colorado. The seat of Douglas County, the town lies 26 miles (42 km) south-southeast of Denver.
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calendar_today Oct 11, 2026
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