Trail Running Calendar United States 2026-2027

Loop trail races in Shawnee State Forest on October 3, 2026, with 54 mile, 31 mile and 13.1 mile options, significant elevation gain, cupless aid stations and a remote wilderness section.

A timed endurance running event in Cohoes, NY on October 3, 2026 offering 6 hour, 3 hour and 1 hour options plus relays. It benefits Flutters of Hope, a nonprofit supporting people and families affected by eating disorders.

El Diablo Hundo is an ultramarathon at Lake Bistineau State Park on October 3 to 4, 2026 offering 100M 100K 50M and 25K on a 10 mile loop with two aid stations and varied trail terrain.

Trail running and walk/hike options on the Deam Lake Loop in Borden, Indiana, with 5K and 10K courses, cupless aid stations using reusable cups, optional shirts, and wooden finisher medals.

Mountain trail races on Mount Bachelor over October 3–4, 2026, including 6/12/24-hour summit loops and three looped courses. Chairlift use is included and multiple aid stations and lodge facilities support runners on alpine singletrack.

Experience an off road trail race through the Coconino National Forest at high altitude. Choose from a marathon, half marathon, or 10k while supporting local college cross country programs in the Arizona Nordic Village.

Multi distance weekend in Waynesville MO with 5k 10k and half marathon courses along the Roubidoux and views of Frog Rock. A multi race challenge awards a bonus medal and child entries are available with a registration code.

A point to point trail marathon and 30K on October 3, 2026, from Crawford State Park to Paonia. The event raises funds for the Nature Connection Summer Camp Scholarship Fund and includes shuttle service and on site packet pickup.

Baker Lake 50k is a 50k running event on Saturday October 3, 2026 organized by NW Endurance Events. Registration closes October 2, the entry fee is $85 and a race shirt is available for $25.

Grand Valley Backyard Ultra is a last-person-standing trail event near Fruita, Colorado where runners complete repeated 4.167 mile loops with one hour to finish each loop until only one runner completes an extra lap.

Multiple race distances run near the Royal Gorge Bridge, including a 5K road run, an 8 mile trail race and a 13.1 mile half marathon, plus a free kids Dinosaur Dash and a virtual race option.

Experience the scenic single track trails of Steamboat Springs during the Emerald Mountain Trail Run. Choose between the 4 mile or 12k distances through aspen groves to support the local Boys and Girls Club.

Explore the scenic trails and steep hills of Mirror Lake State Park with several distances available. Finish your race with refreshments and s'mores around a campfire while supporting local park projects.

Experience night trail running on the rolling grassy hills of Lake Elmo Park Reserve. Choose between 5k and 10k races or a 6 hour endurance shuffle on lit ski trails.

Saddles 100 in Prescott, AZ on October 3, 2026 features a loop course with multiple trail races, including 100 miles, 50 miles, 10.72K and a 6.66 mile fun run around Willow Lake.

A trail running event at Shawnee Mission Park with 10M, 20M, 40M, and 50M options, varied terrain, cupless aid stations, a contingency 10-mile course, and awards for finishers.

Trail races of 25K and 50K on the Bartram Trail near Franklin NC, with significant elevation gain, aid stations, a 150-runner field limit and post-race music, food and beer.

Backyard Ultra at Findlay Reservoir on October 3, 2026. Runners repeat a 4.3 mile loop each hour until one person finishes alone; the event is self supported and includes professional timing, ankle and bib tags, live results and a live stre..

A 50 kilometer trail race on October 3, 2026 in Kattskill Bay NY that crosses four peaks around Lake George with about 9,000 feet of climb, staffed aid stations, and a registration requirement for prior ultra-trail experience.

A community event at Forest Ridge Preserve featuring a chip timed 5K and a 1.5 mile self guided hike through the Chagrin River valley. Proceeds support the Moreland Hills Parks Commission and registrants by September 20 receive a commemorat..