Castle Rock
Trail Running Calendar near Castle Rock 2026-2027
Explore the top trail runs near Castle Rock for 2026-2027! We've gathered 25 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
August 2026
A community benefit trail event in Castle Rock with a 5K and a 1 Mile Walk raising funds for a family affected by spinal muscular atrophy.
Trail run at Rampart Reservoir with 8 mile and 16 mile options on single track and rocky sections. Entry is limited to 150 and registration closes August 5, 2026.
September 2026
A load bearing endurance event at Staunton State Park on September 5, 2026. Routes range from 6.5 to 21.5 miles with loads from 10 to 40 lb and proceeds benefit the Special Forces Foundation.
A 24 hour loop endurance run in Palmer Lake, CO on a 0.82 mile course at 7,240 feet, with distance awards and guaranteed buckles for early 100 mile finishers.
The 4th annual Greenland Open Space Pack Burro Race in Larkspur, Colorado offers 8 Mile and 3 Mile pack burro divisions. Teams must register a burro partner, follow animal welfare rules, and the field is limited to 75 participants.
October 2026
A weekend of looped trail races at Bear Creek Lake Park near Lakewood CO offering 100K, 50 Mile, 50K, half marathon, 10K and 5K on mostly singletrack dirt.
A Woodland Park trail event featuring 50k and 10k options on singletrack and forest roads with views of Pikes Peak, stocked aid stations, and crew access for the 50k.
Trail races on Philip S. Miller Park ridgelines include a family adventure run plus 5K, 10K, half marathon and 50K with chip timing and aid stations.
OUTLAST Denver is a six hour trail challenge where runners complete a 5K every hour, earn patches or a medal for laps, and can place on a national leaderboard.
Run the Rocks at Red Rocks Park in Morrison, CO offers a 5k and a 1.3-mile family course, raising funds for lung disease education, advocacy and research in Colorado.
Indian Creek Trail Runs in Sedalia, Colorado on October 17, 2026 offers multiple trail and ultra distances through montane forests, aspen groves, red rock formations and prairie vistas with city views from several viewpoints.