Louisville
Trail Running Calendar near Louisville 2026-2027
Explore the top trail runs near Louisville for 2026-2027! We've gathered 26 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
August 2026
Trail runs and family activities at Arapahoe County Fairgrounds with a dog friendly 5K, kids mile, pancakes, and fundraising for Back the Blue K-9 Force.
A community running event in Allenspark with a timed 5K, a 2K walk/fun run, dog entries for $5, and proceeds supporting The Old Gallery.
Free timed 5K in Lafayette at Waneka Lake with nearby parking; strollers allowed, dogs restricted, and concessions and T shirt sales support the Centaurus Cross Country Team.
September 2026
A multi day ultra on a 2 mile loop in Loveland offering time based and distance races with round the clock aid and on site camping.
Join the community for a 5K run or walk on a brand new dirt course at the North Arvada Middle School Athletic Complex. Support local high school racers before taking on this off road route yourself.
Multi-distance running weekend in Longmont, CO on a flat 1.05-mile loop, offering in-person and virtual options plus awards and on-site aid.
Community 5K, 1 mile fun run and a dog friendly 3.1 mile course on Second Creek Trail supporting Every Child Pediatrics in Commerce City on 09/19/2026.
October 2026
A multi-distance trail weekend at Bear Creek Lake Park offering 100K to 5K courses on mostly singletrack with aid stations, drop bags, pacer rules and live split tracking.
An Oktoberfest themed run in Louisville Community Park with 5k, 10k, half marathon and a kids mile, featuring a traditional German beer mug, a large pretzel, a finisher medallion and an afternoon beer garden with live music.
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.
A backyard ultra at Luvin Arms Animal Sanctuary on Oct 24–25, 2026 with hourly 4.167-mile loops on mostly flat dirt, grass, and gravel plus on-site race camp and cupless aid.