Trail Running calendar near Longmont 2024-2025

We have found 55 Trailruns within 80 miles of Longmont. See below where and when you can find the races.

The Eltuck Valley 12k is part of the Lory Summer Trail Series, taking place on August 27 at Lory State Park in Bellvue, CO. This race offers a fun and low-key opportunity for both new and experienced trail runners, with distances ranging from 5k to 12k. The course is on the fast and flat Valley Trai..

Front Range Ultra Dayze is a 100-hour ultra-running event in Loveland, CO, featuring distances from 6-hour to 200-mile races. Runners can camp for free at the park throughout the event, creating an epic ultra-running party atmosphere. The course is a flat and fast 2-mile loop with 80% dirt trail and..

The Calarat Challenge Trail Running Festival takes place over Labor Day weekend and offers a variety of trail running events, including a 1/2 marathon, 10K, 5K, and Kids 1K. The races start and finish at the Cal-Wood Education Center, running through the beautiful private properties of Cal-Wood and ..

September 2024

The American Heroes Run is a special event held on a beautiful, flat, fast 1.05-mile loop course in Longmont, CO. Participants will receive a high-quality race shirt, and finishers will get a unique event coin. The 100-mile finishers will receive an attractive belt buckle. The event honors the heroe..

The Union Peak Festival will take place in Copper Mountain from Friday 6 September 2024 to Saturday 7 September 2024. You can run between 5 and 9 kilometers.

The Cirque Series trail run on September 7, 2024, at Arapahoe Basin, CO, covers 8.8 miles with 2,411 ft of vertical gain. The course takes runners through various terrains, including singletrack trails, mountain roads, and alpine vistas. Safety is emphasized, with specific instructions for technical..

The Black Squirrel Half Marathon takes place on the scenic trails of Lory State Park in Bellvue, Colorado. The course offers stunning views of Horsetooth Reservoir, Fort Collins, the Great Plains, and the Rocky Mountains. Runners will encounter a variety of runnable yet technical terrain, including ..

The Devil on the Divide trail run takes place on Saturday, September 7, 2024, in Empire, Colorado. Participants can choose between a challenging 50K course with over 6,500 feet of climbing and a 22K course with 3,400 feet of elevation gain. The race offers breathtaking views of Clear Creek County an..

Participants are invited to join the 5K Trail Run presented by Les Schwab Tires, a timed event supporting trail maintenance and Arapahoe County Open Spaces. The event welcomes walkers of all ages. The next run is scheduled for September 12, 2024, with specific times and location to be determined. Fo..

The Nedned Trail Fest will take place in Nederland on Saturday 14 September 2024. You can run between 5 and 25 miles.

The Breckenridge Oktoberfest 5K will take place in Breckenridge on Saturday 14 September 2024. You can run 5 kilometers.

The Red Feather Trail Jamboree will take place in Red Feather Lakes from Friday 20 September 2024 to Sunday 22 September 2024. You can run between 21 and 50 miles.

The 12th annual Snow Mountain Ranch Trail Running Festival will take place on September 21, 2024, at the YMCA of the Rockies in Granby, CO. The event offers 4 races - Half Marathon, 10K, 5K, and 50K, with the option to participate in the Moosehead Challenge or Baby Moose Challenge by completing mult..

The Silver Creek Mountain Runs in Empire, Colorado offer three challenging race options: a 50-mile point-to-point run with 14,000 feet of elevation gain, a 50K lollipop course with 8,500 feet of elevation gain, and a half marathon with 3,500 feet of elevation gain. The courses promise stunning alpin..

The Louisville Trail Race, taking place on September 28, 2024, offers a Half Marathon, 10K, and 5K race on mostly flat terrain with a challenging hill providing a stunning view of the front range mountains. The event is family-friendly with post-race festivities at Louisville Community Park. The cou..

The Wildcat Mountain trail races start at the Douglas County East/West trailhead and go through the HRCA Backcountry Wilderness Area Wildcat Mountain trail system. Participants receive a dry-fit race t-shirt, custom finisher award, and can enjoy a free pancake breakfast and post-race beers. The cour..

The 24 Hours of Palmer Lake Endurance Run is a challenging trail run event taking place in Palmer Lake, CO. Participants will have 24 hours to complete as many loops as possible on a scenic 0.82-mile course surrounded by mountains at an elevation of 7,240 feet. Awards will be given to the top 3 over..

The Bear Chase Race Endurance Festival offers a variety of distances including a 100k, 50 mile, 50k, Half Marathon, and Baby Bear 10k Trail Race at Bear Creek Lake Park in Lakewood, CO. The course provides a mix of challenging terrain and scenic views, with 95% of the race on dirt and single track t..

The Jelm Mountain Run will take place in Jelm Mountain on Saturday 28 September 2024. You can run 10 miles.

October 2024

The Castle Rock Trail Festival offers a variety of trail run options, from the liveBIG 5K to the challenging Ultra Marathon 50K, set on the beautiful and captivating Castle Rock ridgeline trail system. Participants can enjoy post-race refreshments, professional chip timing, and free photo downloads...