Trail Running Calendar United States 2026-2027

Take on the Angry Cow Trail Run and Obstacle Race at Rockford Lake on May 30, a lively 4 to 5 mile route through woods and pastures with obstacle challenges along the way. Camping and rucking options are offered, register by May 15.

Run scenic trails around Hargus Lake at A.W. Marion State Park on May 30, 2026, with options from 5K to a half marathon plus a 20K relay and a 6 Hours of Power timed challenge. Enjoy rolling woods, shoreline views, a marked course and finis..

Join San Mateo PALs 5K and 10K at Coyote Point on May 30, 2026 to support health and mental wellness. Race registration includes a T shirt and access to a free Wellness Fair, and the event welcomes families, strollers and dogs.

Timed ultrarun on a scenic 1.75 mile loop around Lake Tye in Monroe, WA. Choose your time, run as many laps as you can, earn a wooden medal coaster, and help raise funds for local trails and charities.

Connor's Claims Ultra near Stockton, UT offers 50 mile, 50K and half marathon options across rugged Oquirrh Mountain terrain. Expect big climbs on old mining roads, sweeping summit views and a true alpine test for ambitious trail runners.

Hit the trails at Brown County State Park for the DINO Trail Run, with 5K and 15K routes over scenic, hilly mountain bike trails. Expect tough climbs, a fast downhill finish, and a free kids race for the whole family.

Conquer the climb at the Mount Magazine 15k on May 30, 2026 in Havana, AR. Enjoy a scenic uphill route to the summit with shuttle return or run back, plus a shirt and custom medal; run, walk and virtual entries available.

Tail Wagger brings dog friendly 5K and 1 mile fun to North Tahoe Park on May 30, 2026 and to Incline Village TBA. Expect scenic trails, an expo, separate human only starts, swag for pups and people and a local pet charity fundraiser.

Free one day running festival in Crystal Lake celebrating local races, clubs, and brands. Pick a 4.3 or 6.8 mile social run, browse the expo, enter raffles, demo gear, and enjoy food, drinks and community fun.

A May fundraising series on the C&O Canal and Appalachian Trail supporting HARC programs, with distances from 5K to a 20-mile challenge, on-trail support, and a post-hike celebration lunch.

A non competitive, fully supported hike on the C&O Canal towpath with 5 K and 10 K options, snacks and a post-walk lunch. Prizes recognize top fundraisers and fundraising participants enter a prize drawing.

Trail races at Toro Park near Salinas, CA take place on rolling golden hills and smooth trails. Distances include Trail 10K, Half Marathon and Trail Marathon, and the weekend also features Spartan obstacle course races and spectator access.

Lucifer's Crossing at Robert Treman State Park offers half marathon, 10K and 5K trail races through the scenic Lucifer Falls gorge. Expect rolling climbs, historic stone steps and mostly singletrack for a rewarding trail challenge.

Run the scenic Tomorrow River Trail half marathon from Plover to a festive finish at Central Waters Brewing Co in Amherst. Enjoy over nine miles of trail and secure a guaranteed t shirt by registering by May 3.

Celebrate the 1980s at Running Through the Decades in San Antonio with an 80s playlist, pre race costume contest and a fun half marathon plus 5K, quarter and kids runs. In person and virtual options, medals and shirts for all.

Conquer the Cove brings a 300 runner limit trail challenge at Carvins Cove in Roanoke offering marathon and 25k distances plus virtual entries. Expect rugged singletrack, big climbs and sweeping reservoir views on a rewarding race day.

Run the Billings Skyline Races for a scenic challenge along the Rimrocks and Skyline Trail. Choose a rolling 13.1 mile loop or a longer 30K that adds elevation, with panoramic views of the Yellowstone Valley and Beartooth Mountains.

Enjoy the Rabun Half Marathon in Sky Valley on May 31, 2026, a scenic trail course past Ammon Falls and stretches of the Bartram Trail with views of Rabun Bald. This grassroots run celebrates pure trail running with no t shirts, no swag, an..

Run the 11th Annual Paper Chase 5K in Lansing on May 31 for a scenic out and back along the Lansing River Trail with chip timing and live results. Proceeds benefit Michigan Capital Region Big Brothers Big Sisters.

Join the XC Summer Series, a friendly weekly cross country 5K on Tuesday nights in Parsippany from April 28 to September 1, 2026. All ages and abilities welcome, walkers included, with chip timing and after race refreshments.