Trail Running calendar near Billings 2026-2027

We have found 133 Trailruns within 80 miles of Billings. See below where and when you can find the races.

Timed trail event at Gurski Farm in Brookfield CT featuring continuous 4 mile loops for 8 hour and 4 hour runners plus new 5K and 5K Canicross options. Post race food and beverages are provided.

Trail marathon and half marathon in Rockefeller State Preserve with start and finish at Rockwood Hall. Courses use wide, groomed carriage roads and offer run and walk options with charity bib entries.

A trail 10k at Ward Pound Ridge Reservation paired with a November virtual 100k challenge that rewards finishers with a custom engraved woodallion; the race uses rocky ridgeline trails and includes an on-course water stop near the fire towe..

A technical trail event at Tarrywile Park in Danbury offering 10K, half marathon and marathon distances with significant elevation gain; finisher medals, podium awards, and post-race food are provided.

A trail half marathon in Roosevelt Forest on November 21, 2026, run as eight 1.64 mile loops over singletrack and doubletrack with roots, rocks, and rolling hills. Costumes are encouraged and a book drive supports Books4Everyone.

Take on a rugged 5 mile lollipop loop in Lewis Morris Park with rocks, roots and about 600 feet of climb for a true trail challenge. Limited to 120 runners, the cupless, eco friendly event features reusable cups and hemp race bibs.

Join the Soul n Body Thanksgiving Trail Run in Wolcott CT for a spirited 3.5 mile loop around Mill Pond Way, complete with finisher medals, swag and post race yoga. Proceeds benefit endometriosis research and furry friends are welcome.

Trail loops at South Mountain Reservation with 5K laps used for 5K, 10K, 25K, 50K and a kids mile. Family friendly, volunteer supported, and partnered with Bigger Than The Trail; the event typically sells out.

Rob's Trail Run Edition stages 5K trail runs for adults and for high school or youth runners at Stillwell Woods Preserve in Woodbury, NY. The event supports The Center for Developmental Disabilities and is produced by RaceAwesome.

December 2026

A timed out and back event on the Tower Trail at Sleeping Giant State Park where runners repeat roughly 3.3 mile laps to the Observation Tower in four hour or eight hour formats. Aid is at the start and finish and the race follows a cupless..

A 5K trail race at Roosevelt Forest in Stratford, CT on December 19, 2026, run over two 1.55 mile loops. Holiday costumes are welcome, awards are given to top finishers, and all finishers receive a custom medallion; proceeds support local c..