Trail Running calendar near Old Town 2026-2027

A community-focused trail festival in Gold Hill, Colorado, with 28K, 12K, 5K and Kids 1K races, a shuttle from Boulder, and proceeds supporting wildfire preparedness for the town.

Experience the beauty of Lory State Park at this USATF sanctioned trail race featuring 5K, 5 mile, and 10 mile distances. Enjoy scenic foothill views, plant-based post-race pancakes, and unique wooden medals.

An overnight endurance event in Highlands Ranch, Colorado offering solo and team relay options on a 10.3 miles dirt loop beneath a full moon. Two aid stations, drop bags, medical support and a headlamp requirement are provided.

A lap-based backyard ultra around Lake Estes in Estes Park, Colorado. Each lap is 4.252 miles on a paved bike trail with 150 feet of gain, repeated hourly until one runner remains; aid, a custom hat, and athlete village space are provided.

Experience a half marathon in the mountains of Nederland Colorado. This event features a significant elevation gain of 4226 feet with the summit always in view.

Kick off Independence Day with a 5k run/walk in Winter Park, Colorado. The scenic route travels along the Fraser River Trail and finishes at the Rendezvous Event Center for a post-race party.

Experience a true mountain ultra through the rugged alpine peaks and lakes of Northern Colorado. Navigate technical trails and high ridges across 60km or 100km courses in a wild wilderness setting.

Experience an epic 200 mile point to point team relay from Fort Collins to Steamboat Springs. Run through the heart of the Rocky Mountains and over two scenic mountain passes in this ultimate Colorado road race.

Experience high alpine racing through the scenic singletrack and forest trails of Winter Park Colorado. Join a point to point mountain adventure with distances ranging from a 10K loop to a technical 50K ultra.

Experience a series of midweek trail races at Lory State Park with distances ranging from 5km to 12km. Enjoy a post-race social with pizza and beverages after navigating the scenic trails of Fort Collins.

Experience a focused trail run through the hills of Lory State Park with 1,700 feet of elevation gain. Enjoy a post-race social with pizza and beer in a scenic outdoor setting limited to 100 participants.

A four-race trail series on Tuesday evenings in August in Lory State Park. Distances include 5K, 10K, and 12K routes with varying elevation. Pizza and drinks follow each race, with series awards at the end.

A marathon and half marathon on August 15, 2026 at Lake Owen in the Medicine Bow National Forest. Routes run on the 21 mile Rail Trail at high elevation and support trail upkeep.

A multi-distance race at Boulder Reservoir, Colorado, featuring a mostly dirt and trail course with about 200 feet of elevation gain and views of the reservoir and the Rocky Mountains.

Experience the first ever trail race through the iconic red rocks of Roxborough State Park. Tackle 50 miles or 50k of technical singletrack and high country terrain before enjoying a finish line celebration with food trucks and local brew.

Trail races around Standley Lake in Westminster, Colorado, in August 2026 offering 50K, 35K, half, 10K and 5K on 100% dirt trails with out-and-back course formats, parking at Wayne Carle Middle School, and support stations along the routes.

Summit Grays and Torreys Peaks in this 8.8 mile Colorado endurance event. Participants must carry a 20lb dry load while tackling 4,101 feet of elevation gain.

Experience a hilly 5k trail race through the scenic Lory State Park. Enjoy a low key atmosphere followed by pizza, beverages, and a vintage race shirt in this midweek summer series event.

A four-race trail series on Tuesday evenings in August in Lory State Park. Distances include 5K, 10K, and 12K routes with varying elevation. Pizza and drinks follow each race, with series awards at the end.

Test your endurance at Snow Mountain Ranch with a 60 hour challenge on a 10 mile mountain trail loop. This all inclusive event features lodging, meals, and recovery support as you aim for milestones up to 100 miles.