Trail Running Calendar United States 2026-2027

A multi-day trail event near Los Olivos, California offering looped 10 mile courses on ranch roads and single track. Formats range from a single 10 mile loop to multi-day 100 and 200 mile challenges with camping, aid stations, and lap timin..

Trail races in Rothrock State Forest near State College, PA, with 53.3 KM and 26.9 KM options and significant elevation gain. Courses run through sandstone ridges, fern valleys, and rhododendron tunnels and connect with the Happy Valley com..

An obstacle race weekend at Reveille Peak Ranch near Austin on May 15 and 16, 2027, featuring trail and rocky terrain. Events range from a 5 km sprint with 20 obstacles to a 10 km super plus kids and endurance formats.

The Bear Crawl OCR is a locally operated obstacle course event in Morganton, North Carolina, held at a motocross training facility. It offers one- to six-mile courses with rolling terrain, a dirt bike track, creek and pond crossings, and se..

A team 10K adventure race across a 575 acre Kentucky farm with 18 challenge checkpoints and a two hour time limit. A separate 1 mile community event offers food trucks, activities, and six open checkpoints.

A high altitude Spartan weekend at Big Bear Mountain Resort featuring Sprint, Super, Beast and Kids races, plus a Trifecta option to complete all three main distances in one weekend.

A May trail event at Possum Kingdom Lake with varied terrain and substantial elevation per loop. Multiple race distances are offered, the event is cupless, and longer distances allow drop bags and limited pacer use on the final loop.

At John Hunt Park in Huntsville a free, capped event offers multiple timed formats including a 24 hour option. Runners use a rubberized 1.7 mile loop with aid stations, food trucks, overnight camping, chip timing, and awards.

Trail runs at Skyline Wilderness Park near Napa feature four distances from about 6 to 32 miles with significant elevation. The cupless courses include spaced aid stations, a long water only stretch on the longer routes, and on site parking..

Trail races at O'Neill Park in Trabuco Canyon offer distances from 10k to 50k on park trails. Registration opens Dec 1, 2026 and the event does not offer refunds, though rollovers are allowed for weather or fire cancellations.

A timed backyard ultra on a 4.167 mile loop at Butterfield Trailhead Regional Park in Herriman, UT. Runners compete in 4 hour, 8 hour, or 12 hour formats with live lap timing and placement by loops then cumulative time.

A trail ultramarathon at Skyline Wilderness Park on May 15, 2027, featuring a solo ~51-mile 2.5-loop course and a one-loop ~25-mile option. Cupless aid stations, specified crew and pacer rules, drop bag service, on-course nutrition, and pos..

A Last Person Standing ultrarun on a farm near Arena, WI, run on a 1 to 1.25 mile loop with about 250 to 300 feet of climbing per lap. The course changes yearly, reverses every four hours, and continues until one runner remains.

A backyard ultra in Muskogee where a six sided die decides each hourly out and back lap between one and six miles. The event continues until one runner completes a final loop and is the last person standing.

A mountain trail marathon and half in Orem, UT on May 15, 2027, using mostly single-track trails with marked turns, multiple aid stations, drop-bag points, and significant elevation gain on the full marathon.

Experience classic central Texas terrain at Reveille Peak Ranch with a dedicated 10 km trail run. Navigate narrow singletrack and slickrock paths in this scenic event held alongside a Spartan obstacle course weekend.

A trail 10K at Big Bear Mountain Resort on singletrack through high altitude pine forest, with technical climbs, descents and views of the Southern Sierra. The weekend also includes Spartan obstacle races and spectator options.

A Spartan Trail event at Reveille Peak Ranch on May 16, 2027 featuring a **10K** trail through narrow singletrack, slickrock, and cactus. Spectator access is available and a service member discount is offered for eligible US personnel.

A charity trail event at Skyline Ridge Open Space Preserve in Los Gatos offering 50K, 30K and 10K courses, with 100% of registration proceeds donated to a UCSF cancer research lab.

A timed 5K on grass and dirt trails plus an untimed one mile run and a virtual 5K at Columbus Park that supports a Michigan animal rescue foundation. Team fundraising, prize drawings, and finisher medals are included.