Prairie Dog Half and 10K - Castle Rock

Lace up your running shoes for the scenic Prairie Dog Half and 10K - Castle Rock, taking place on Saturday, July 18, 2026, in beautiful Castle Rock, CO. This popular event, part of the well-regarded Prairie Dog Half series, offers runners a choice of distances including a Half Marathon (13.1M), 10K, and 5K. The course, primarily on the East Plum Creek Trail, features a 100% concrete surface, providing a consistent stride as you take on an engaging out-and-back route. Runners will encounter some hills, particularly a challenging stretch in the first mile and a half that promises an exciting finish. Keep an eye out for local wildlife, including the prairie dogs themselves, as you navigate this picturesque trail system.

Typical race day conditions in mid-July bring average highs around 86°F and lows near 58°F, with a low chance of precipitation, creating a true summer running experience. Aid stations are strategically placed to keep you fueled: the 5K offers two water stops, the 10K has four, and Half Marathon participants will find eight water stations stocked with water and an electrolyte drink, plus energy gels at miles 5.5 and 6.5. Port-a-Johns are available at the start/finish area and at key points on the half marathon course. This "low-key but well-run" event welcomes well-behaved, leashed dogs and strollers, making it a fantastic option for the whole family.

Beyond the invigorating course, participants can look forward to chip timing, a race day shirt, and free photo downloads to capture their achievement. Half Marathon finishers will also earn a well-deserved medal, while all distances receive a commemorative finisher's pint glass. With free GPS tracking available for spectators, your cheer squad can follow your progress every step of the way. Starting and finishing at Castle View High School, the event provides ample parking and a vibrant community atmosphere.