Trail Running calendar near Castle Rock 2026-2027

Aiden's Adventure 5K on June 6 in Colorado Springs is a family friendly run and kids dash honoring Aiden while benefiting local charities. Enjoy scenic trails, free shirts for early registrants, carnival games and food trucks.

A 10k+ loop trail run at Devil's Backbone Open Space in Loveland, Colorado on June 7, 2026, using Hidden Valley, Hunter, Laughing Horse and Wild Loop trails. The course is marked with flour arrows, features a staffed aid station, and ends w..

Scenic dirt trails around Barr Lake offer looped courses with continuous lake and front range views. Distances from 5K to 50K suit beginners to ultrarunners, with aid stations on longer routes and a cupless sustainability focus.

A long-running set of races through the 300-foot sandstone formations of Garden of the Gods Park, featuring a 10 Mile road race, a 10K road race, and a 10K trail run with a common finish at Rock Ledge Ranch.

Join the Leadville Trail 100 Run Camp in Leadville, Colorado, June 19 to 21 for a three day preview of the LT100 course. Enjoy guided day and night runs, gear demos, shuttles and recovery services for a full race ready experience.

Ring the Springs on June 20, 2026 in Colorado Springs offers scenic, high altitude trail races starting and finishing at Rock Ledge Ranch at Garden of the Gods. Choose from 35K, 50K or a tough 100K for stunning views and big climbs.

Race in the Clouds at Alma Cemetery Meadow offers high country trail running, mountain bike races and weekend camping at 10,600 feet. Choose from a trail half, 10K, multiple bike distances and free kids races for a weekend of alpine adventu..

Trail races in Leadville, Colorado that follow historic mining roads and single track and top out at Mosquito Pass at 13,185 feet. Distances include 26.4 miles and 15.46 miles, with multiple aid stations and on course nutrition.

Celebrate July 4 with Pueblo's Firecracker 5K along the scenic Arkansas River Trail starting at City Park Pavilion. Family friendly fun with medals, outfit contests, Kona Ice and proceeds supporting Southern Colorado Runners Club.

Celebrate July 4th with the Rendezvous Run for Independence, a community 5K run or walk in Winter Park, CO. Enjoy scenic Fraser River Trail views and finish at the Rendezvous Event Center for postrace refreshments, awards and prizes.

High Trails Retreat in Buena Vista July 9 to 12 2026 offers daily runs of 10 to 20 miles and an optional Hope Pass or Sawatch 14er climb. Stay riverside, share meals, relax by the river and pick routes with the group.

A multi-distance mountain trail event near Como, Colorado on July 10–11, 2026 featuring routes from 10 miles to 100 miles, high alpine terrain above 10,000 feet, point-to-point and loop options, and specific qualifying and volunteer require..

A high-altitude 50-mile out-and-back in Leadville with about 7,500 feet of gain, seven aid stations, off-site parking with shuttles, and LT100 qualifier coins; shorter 15-mile and juniors 5K options are also offered.

A mountain trail race in Manitou Springs, Colorado, covering 12.6 miles up and back on Barr Trail to Barr Camp. Scheduled for July 19 2026, it is part of the Garden to Peak Challenge and runs under a Pike National Forest permit.

Join TransRockies Run Pass to Pub for three days of alpine trail racing from Hope Pass to Red Cliff in Leadville, Colorado, with fully supported camp life, live music, showers and catered meals. Limited to 500 runners July 19 to 21, 2026.

A multi distance trail event in Colorado Springs on July 25, 2026, starting at Bear Creek Regional Park with routes from 20K to 50 miles over local trails, crushed granite surfaces, cupless aid stations, and published elevation profiles.

A single 200 mile loop around Summit County, Colorado, at high altitude with about 40,000 feet of elevation change, live GPS tracking, limited field size, and multiple aid and sleep stations over a multi day schedule.

Sheep Mountain Trail Runs in Fairplay, Colorado offers Half Marathon, 50k and 50 mile courses at high elevation above 10,600 feet, with well stocked aid stations, finisher awards and mid race drop down options for longer distances.

Run a scenic mountain 50K or 10K from Winter Park Resort into town with flowing singletrack, aspen groves and views of the Continental Divide. Expect changing high altitude conditions, full aid stations and a finisher award.

Experience the Buena Vista Pack Burro Race in Colorado on August 2, 2026 with long and short courses and options to compete with or without a burro. Finishers enjoy a gift, pizza buffet, free photos and small town Triple Crown charm.