Trail Running Calendar United States 2025-2026

Run the Bear 100 on September 25, 2026, a point to point 100 mile ultramarathon to Bear Lake through scenic mountain forests. This challenging race is a qualifier for Hardrock and Western States and holds UTMB index status.

Mammoth Trailfest in Mammoth Lakes is a three day trail running festival with races from Kids 1K to 50K, summit finishes and technical high altitude singletrack. Enjoy Village Plaza talks, live performances and a strong low impact ethic.

Rocky Mountain Slam in Logan, Utah on September 25, 2026 is an epic 100 mile series that culminates with The Bear 100 as the required finale. Complete at least four 100 mile races in the series to earn recognition and a finisher award.

Run 100 or 200 miles on Nebraska's Cowboy Trail, a largely flat crushed limestone rail trail perfect for runnable miles. The point to point 200 miler goes Norfolk to Valentine, field capped at 150 and supported by aid and sleep stations.

Experience the Red Feather Trail Jamboree at Ben Delatour Scout Ranch with 50 mile, 50K and half marathon options across high elevation singletrack and technical mountain trails. Expect big views, wildlife and well stocked aid stations.

The Echo 136 is a 136 mile trail ultramarathon through the scenic Kettle Moraine and Ice Age State Trail near Whitewater, Wisconsin on September 25, 2026. Expect rugged singletrack, generous aid stations and a 55 hour time limit.

Run the Westmore Mountain Challenge in East Charleston, Vermont, a rugged trail marathon that crosses five peaks over 26 miles and 6,100 ft of climbing. Shorter distances and limited entries create a scenic, low impact mountain experience.

Experience the Sangre de Cristo Trail Festival near Westcliffe, Colorado in late September, featuring trail races from 8 miles to 100 miles on the Rainbow Trail. Camping on site and finisher awards add festival atmosphere while 100 mile fin..

Anchorage United Nations Run : 2025 event status The 2025 Anchorage United Nations Run was cancelled due to an error in the permitting office that delayed approval. The organizers plan to hold the event next year on September 26, 2026. Purp..

Crested Butte Ultra offers high alpine single track racing in Colorado with 50 Mile, 55K and 35K options through Gunnison National Forest. Expect sweeping mountain ridge views, cupless aid stations, custom swag and a finisher buckle.

Run rolling single track and forest roads around Buena Vista, Colorado, with sweeping Collegiate Peaks views. Choose a 30K or 50K and soak up 14er Fest vibes with camping, live music and local vendors.

Take on scenic trails at Marilla Reservoir in Bradford, PA on September 26, 2026 with 14 mile and 7 mile runs or a 4 mile hike. Expect rolling hills, marked single track and chip timing, plus a finish at a historic covered bridge while supp..

Run the Ascot Hills Challenge 5K on scenic trails above East Los Angeles with sweeping views of Dodger Stadium and the Hollywood sign. Proceeds benefit Wilson High School fire and police cadet programs and help preserve Ascot Hills Park.

Run the classic Dick Collins Firetrails at Lake Chabot Marina, with 100k, 50 mile and marathon options across scenic Bay Area trails. Challenging yet well supported and UTMB indexed, the 43rd edition returns Sept 26, 2026.

Run a scenic 7.78 mile loop at Clarkco State Park, repeating it to reach distances up to the ultra within a 10 hour limit. Enjoy lakeside views, bridges, one aid station and camping for a full race weekend.

The Cat's Tail Marathon will take place in Shandaken on Saturday 26 September 2026. You can run 26 miles.

Join the 36th Three Course Challenge at Camp Rilea near Seaside Oregon, a spirited cross country meet for middle and high school runners celebrating the sport since 1990. Multiple scenic courses and lively weekend festivities make this a mu..

Join the Run Baby Run 5K in Lexington for a flat, family friendly course through Coldstream Park that supports NICU families. Enjoy a kids dash, commemorative tee and virtual option while helping provide essentials for babies in need.

Explore coastal trails around Anacortes with ocean views and the iconic Deception Pass Bridge on loop and out and back courses. Marathon, half marathon, 5 Mile and kids race options welcome runners of all paces in a sustainably run event.

Take on the Miami 100 on September 26, 2026, an open road 100 mile ultramarathon through iconic Miami neighborhoods. Limited to 50 runners, it leans on crew support and checkpoints and includes an optional 130 mile challenge.