Trail Running calendar near Jackson County 2025-2026

Push your limits at the Thumbs Up Vertical Challenge in Estes Park on December 6, 2025, making repeated climbs of the Thumb Open Space trail and collecting poker chips at each turnaround. Limited to 30 runners, this intimate mountain test r..

Run the Twin Mountain Trudge in Laramie WY on Jan 10, 2026, choosing a ~10.2 mile single loop or a ~20.5 mile double. Thigh deep snow, ice and about 2,000 feet of climbing make this a rugged winter course that demands proper gear and grit.

Join the USCSA Cross Country Ski Racing Festival at Snow Mountain Ranch in Granby Colorado on Jan 24 and 25 2026. Collegiate teams and middle and high school racers take on classic distances and a skate sprint over two action packed days.

Tackle the Sourdough Snowshoe Race in Nederland CO on Jan 31 2026, a donation based backcountry challenge where snowshoes are required for the full route. Choose 18K or 30K and warm up at the finish with hot drinks and a warming tent.

Race The Ranch in Granby, Colorado invites snowshoers to tackle scenic looped courses at Snow Mountain Ranch across 5k, 25k, and 50k distances. Finishers earn a custom beanie and engraved camp mug in this supported winter adventure.

Join Run the Ranch April 10 and 11, 2026 at Sylvan Dale Guest Ranch in Loveland, Colorado for trail races on private ranch trails, from 5K and 10K to timed 4 hour, 6 hour and 12 hour solo and relay events. Virtual options available.

Run the Poudre River Trail April 11 and 12 2026 at the NoCo Urban Ultra and Relay, with 50 and 100 mile solo or relay options. Enjoy a scenic route through Fort Collins, Timnath, Windsor and Greeley and celebrate at a lively finish festival..

Tackle the Quad Rock 25 or 50 mile trail races on May 9, 2026 in scenic Lory State Park and Horsetooth Mountain Park near Fort Collins. Expect rugged singletrack, big climbs and sweeping views for a challenging, unforgettable day on the tra..

Run the Summits Trail Runs on June 6, 2026 at Granby Ranch Resort, Colorado, with options from a 6 mile to a challenging 50k. Experience single track trails, alpine meadows, and big climbs in a limited field for an intimate mountain race.

Take on the Crazy Legs 10k trail run through the scenic Devil's Backbone Open Space in Loveland on June 7, 2026. Limited spots, marked trails, and a post race celebration at Loveland Aleworks make this a fun mountain running day.

Hit the foothill dirt trails at Lory State Park on June 27 for the Timberview Trail Run with 10 mile, 5 mile and beginner friendly 5K options. Finish with pancakes, craft beer and finisher swag at this USATF sanctioned community favorite.

Take on the Never Summer trail ultras near Gould, Colorado, with 60 km and 100 km routes across high alpine ridges, lakes and rugged terrain. Expect big climbs, wildlife sightings and a true mountain adventure.

The Summit 200 is a 200 mile loop around Summit County Colorado that climbs into high alpine single track above 12,700 feet. Capped at 100 runners and requiring a prior 100 mile finish, it is a remote, high altitude test of endurance.

Join the Wild West Relay, a scenic point to point 200 miles across Colorado from Fort Collins to Steamboat Springs. Run solo or with teams from 1 up to 12 people as you tackle mountain passes, open roads and big western views.

Run the Lory Summer Trail Series in August at Lory State Park: four midweek trail races from 5K to 12K with scenic climbs and friendly competition. Stay after each race for pizza, drinks and a free vintage shirt, plus series awards.

Run the Lory Summer Trail Series in August at Lory State Park: four midweek trail races from 5K to 12K with scenic climbs and friendly competition. Stay after each race for pizza, drinks and a free vintage shirt, plus series awards.

Run the Rockies Trail in Frisco, Colorado offers 5k, 10k and half marathon on scenic single track and dirt trails. Take in views of Dillon Reservoir and the Ten Mile Range with a lakeshore finish to cheer your arrival.

The Emerald Mountain Epic is a two day trail festival in Steamboat Springs blending mountain biking and trail running on rugged singletrack with big elevation gains. Enjoy fully stocked aid, a lively finish area, and proceeds that benefit l..

Run the Med Bow Rail Marathon or Half on August 15, 2026, along the scenic Medicine Bow Rail Trail near Laramie, Wyoming. Enjoy wide gravel trails, lake loops and mountain views while supporting trail upkeep; all finishers get a medal.

Run mountain trails in Fraser, Colorado on August 22, 2026 with a scenic high elevation half marathon or a friendly 5K along dirt roads. All proceeds benefit the Shining Stars Foundation and dogs on leash are welcome.