Trail Running Calendar United States 2025-2026

Take on the OG Yeti 100 Mile trail endurance run in Abingdon, Virginia, Sept 25 to 26, 2026. This Western States qualifier offers rugged singletrack, crewed aid, and a welcoming small town finish.

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.

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.

Join the Sangre de Cristo Trail Festival in Westcliffe Colorado on September 26 and 27, 2026, with scenic routes from 8 mile to 100 mile. Aid stations, drop bags, and finisher awards make for a memorable weekend.

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..

Experience high alpine trails at Crested Butte Ultra in Colorado on September 26, 2026, with 50 Mile, 55K, and 35K options that climb to breathtaking views. Expect rugged singletrack, cupless aid stations, and memorable finisher swag.

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.

Experience classic East Bay singletrack at Dick Collins Firetrails in Castro Valley, with 100k, 50 mile, marathon and 30k options across scenic ridges and regional parkland. Friendly aid stations, stunning views and a lively finish atmosphe..

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.

The 36th Three Course Challenge returns September 26, 2026 at Camp Rilea near Seaside Oregon with middle and high school cross country races across three scenic courses. Live drum corps and team awards add to the excitement.

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.