Trail Running Calendar United States 2026-2027

This 104-mile ultramarathon traverses the Chattahoochee National Forest with 33,000 feet of climbing. It qualifies for major lottery races and has strict entry requirements for experienced trail runners.

Out-and-back ultramarathon courses in and around Kanab, Utah, with **115 miles**, **50 miles** and **50 km** options across sand dunes, red-rock canyons and plateaus. Aid stations offer food, drinks and limited sleeping; cutoffs range from..

Experience a high desert ultra across the rugged red rock canyons and sandy plateaus of southern Utah. Choose between 115 mile, 50 mile, or 50 km distances in this sanctioned event starting and finishing in Kanab.

Trail running event in Rothrock State Forest and Happy Valley, Pennsylvania. Races include a 50K and 25K with notable elevation gain amid sandstone ridges and rhododendron tunnels in mid May 2026.

A three day stage trail race in Wildwood, Missouri from May 15 to 17, 2026. It covers roughly 21 miles, 26 miles and about 25K across Rockwoods and Greensfelder trails with creek crossings and scenic bluffs.

Three trail races in Richmond across Belle Isle and the James River waterfront: a chip timed 5K, a 10K through riverfront trails, and a 13.1 mile urban single track half marathon with riverbank terrain and skyline views.

A family friendly 5K fun run at Leach Park on May 15, 2026 with a finisher medal, optional foam machine and on site bounce house. Proceeds support Strides for Sunnyside Run Club and shirts are $10.

Obstacle-course races run May 16 and 17, 2026 at Reveille Peak Ranch near Burnet, Texas. Courses move through Texas Hill Country across granite outcrops, dry creek beds and rolling hills with Sprint, Super, kids and endurance formats.

A weekend of Spartan obstacle races at Big Bear Mountain Resort featuring Sprint, Super and Beast distances at high altitude, with steep climbs and course maps subject to change.

Trail race at Palisades Park in Oneonta, AL on May 16, 2026 with 5K, 10K, 15K and 20K options. Climbers who sign a waiver can retrieve a finisher medal at the tower; proceeds support OHS Cross Country and Palisades Park.

Trail runs at Skyline Wilderness Park in Napa offer distances from 10K to 50K with steep Rim Rock climbs and valley views. Aid is touchless and parking is included with registration.

A rural ultramarathon in Enterprise, KS featuring 50K, 100K and a 100 Mile race on gravel roads and a rail trail with a manned aid station per loop. Pacers allowed from loop 6; shirts, awards, and finisher buckles are included.

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 Spartan obstacle weekend at Southington Off Road Park near Cleveland with races from a kids course to a 50 km Ultra across wooded, rugged trails. The Trifecta option allows completing Sprint, Super and Beast in one weekend.

A timed backyard ultra at Butterfield Trailhead using a 4.167 mile loop repeated hourly in 4, 8, or 12 hour formats, with live lap timing, finisher awards, and a finish area set up for friends and family.

Run for Amma is a charity trail event on May 16, 2026 at Skyline Ridge Open Space Preserve near Los Gatos. Multiple distances from 10K to 50K are offered and all registration proceeds support UCSF cancer research.

An inaugural trail ultramarathon in Napa offering a 50 mile solo and a two-person 50 mile relay over two long loops through Skyline Wilderness Park and Suscol Headwaters, run as a cupless event with four aid stations and limited crew access..

A 5K obstacle course at Rocky Mount Sports Complex with mud pits, 15 plus obstacles, and a one mile kids race. Proceeds support local college scholarships and registered racers receive a shirt, medal, and goodie bag.

Born To Run Ultra Marathon in Los Olivos CA on May 16, 2026 offers distances from 10 miles to 100 miles plus 3- and 4-day formats; registration opens December 1, 2025.

Experience the natural beauty of Mueller State Park with various trail distances from a 10k to 12 hour timed ultra events. Choose between traditional distance loops or a unique randomized format determined by colorful draws.