Trail Running Calendar United States 2026-2027

Take on 10k, 25k or 50k trail routes along Millerton Lake and the San Joaquin River in Friant, CA on December 5, 2026. Enjoy scenic waterside singletrack, well stocked aid stations and a friendly ultrarunning vibe.

Join the Mosaic Trail Race on Saturday December 5 2026 at a historic Texas ranch along the San Gabriel River near Austin. Choose distances from a 1 mile youth run to 50k and enjoy event swag and a race shirt if registered by November 10.

The The Triple C at Woolly Hollow will take place in Greenbrier on Saturday 5 December 2026. You can run between 4 and 10 miles.

The Fall Backyard Burn Trail Run - Fountainhead will take place in Fairfax Station on Sunday 6 December 2026. You can run between 5 and 10 miles.

The The Krampus Cross Country will take place in San Francisco on Sunday 6 December 2026. You can run between 5 and 9 miles.

The Topo Trail Marathon Races will take place in Bethel on Sunday 6 December 2026. You can run between 7 and 26 miles.

Frigid Beast Feast offers distances from 3 to 150 miles along the scenic Tickfaw River Trail at Tickfaw State Park. Camp on site, enjoy staffed aid stations, and earn a finisher medal in a wild riverside setting.

Kick off a festive season with the first My Resolution 5K and 10K on December 12 in San Antonio, featuring loose sand courses that turn every stride into an adventure. Celebrate at the finish with s'mores, hot cocoa and live music.

The Pigtails Run Flat Fat Ass returns to Maple Valley this December with 50K, marathon and half marathon options on a community supported course. Expect a laid back, low support atmosphere perfect for self reliant runners and exploring scen..

On Dec 12 Run Caney in Minden LA invites runners to tackle 5K, 6 mile and 12 mile loops around Upper Caney Lake on gentle, beginner friendly trails in Kisatchie National Forest. Overall winners earn awards and age group winners get handmade..

The US Road Running - Smiths Grove will take place in Smiths Grove on Saturday 12 December 2026. You can run between 5 and 13 miles.

The Bridge & Trestle 17 Mile Run will take place in Abingdon on Saturday 12 December 2026. You can run 17 miles.

The Vail Jingle Trail will take place in Tucson on Saturday 12 December 2026. You can run 5 kilometers.

The Ignite Trail Marathon will take place in Albion on Saturday 12 December 2026. You can run between 21 and 42 kilometers.

The Naked Nick is a low fee trail race at Blue Marsh Lake on December 13, 2026 with 25K and 50K on scenic single track and gravel that may be snowy or muddy. Finishers get mementos and chef prepared post race food.

The Mel Williams Memorial Seashore 50K will take place in Virginia Beach on Sunday 13 December 2026. You can run 50 kilometers.

The Palmetto Bluff Buffalo Run will take place in Bluffton on Sunday 13 December 2026. You can run between 10 and 50 kilometers.

The The Longest Night 50mi will take place in Greenville from Saturday 19 December 2026 to Sunday 20 December 2026. You can run between 10 and 50 miles.

The Bigfoot Running Company - San Antonio will take place in San Antonio on Sunday 20 December 2026. You can run between 5 and 10 kilometers.

Start January 2, 2027 in Paris, Texas with the IRON HORSE Endurance Run on the Northeast Texas Trail featuring 100K, 100 Miler, 200 Miler and a 100K RUCK. Fully supported course and a custom finisher plaque with an authentic railroad spike.