Trail Running Calendar United States 2025-2026

Experience a spirited trail running weekend with 50 mile and 50K ultras plus marathon and half marathon options, famed for huge finisher medals and a lively post race party. Registration for 2026 is closed but a wait list will open soon.

Tackle the Cirque Series at Grand Targhee: a rugged 7.1 mile trail with 2,212 ft of climbing through alpine ridges and technical singletrack. Limited to 500 runners, expect stunning views, big climbs, and finish day swag.

Explore rugged single track through old growth forest at the Salt Springs Trail Races on August 29, 2026 in Montrose PA. Choose 5K, 10K or a demanding 50K five loop course with steep climbs and technical descents while supporting the park.

Join the Labor Day Slay on Saturday, August 29, 2026 at Queeny Park in St Louis for 5k, 10k, half marathon and 10K Ruck on fully marked trail loops. Expect chip timing, finisher medals, swag and race day packet pickup.

Challenge yourself on the scenic rolling trails of Philip S. Miller Park in Castle Rock at Rock Hawk Trail Races on August 29, 2026, with 50K, 25K, 10K and 5K distances. Organized by Aravaipa Running, the event supports local open spaces an..

Enjoy scenic, technical trails in St Croix Falls with marathon, half marathon and 10K options over rolling hills, bridges and single track. Limited to 150 online entries, this intimate event features full aid stations and a full color finis..

Take on a 30K open water swim across Pittsburgh's three rivers, starting at Point State Park with full boat and kayak support. This annual late August event raises funds to help families cover infant cardiothoracic surgery costs.

Tackle the scenic trails of Waterville Valley NH near Town Square on Aug 29, 2026 with options from a 1.5 mile fun run to a rugged 50K over iconic peaks. Enjoy challenging terrain, aid stations, and commemorative finisher awards.

Run through sun soaked dirt trails winding across 20 acres of sunflowers near Buhler, KS. On site and virtual 5K and 1 mile options with finisher shirt, medal, festival pass and pancakes for finishers.

Explore the Spartan Trail at Summit Bechtel Reserve in Glen Jean WV on Aug 30, 2026 amid lush forest, technical singletrack and punchy climbs. Choose a 10K or half marathon during an OCR filled weekend of adventure.

Run or walk through Thorncroft's scenic 70 acre farm for the 9th annual 5K and one mile Move As You Please, then celebrate with live music, food trucks and pony meet and greets. Proceeds support the care of Thorncroft horses.

Run the rugged trails of the Dark Divide in Washington's central Cascades at the scenic Cispus Learning Center September 4-6, 2026. Choose from a 100 mile, 50K or 15 mile course across steep, technical singletrack.

Choose from a full marathon, half, or 10k on rugged gravel roads around Jump off Joe Mountain near Kennewick, WA. Summit stretches reward runners with sweeping Tri Cities and Oregon views while aid stations keep you fueled, so bring your ow..

Choose your challenge at Temptation 200 Ultras on September 5 2026 at Sand Ridge State Forest near Forest City, IL, with options from the Not Tempted 10K to a loop based 50K or the epic 200K. The loop format lets runners stop at 50K 100K or..

Tackle rugged trails at the GristMill Grind in Franklin Creek State Natural Area, featuring 5K and 10K routes with creek crossings, bluffs and forest canopy. All proceeds support Franklin Creek conservation and park improvements.

Run the Minnehaha 15k or 5k at Camp Manatoc on September 5, 2026, through scenic private camp trails past Minnehaha Falls. Part of the Dirty Trail Series, it welcomes hikers and dogs by permission and supports Camp Manatoc.

Epic point to point ultramarathon from Mt Crested Butte to Aspen across the Elk Mountains. Tackle 40 miles and over 6,000 feet of climbing on high alpine terrain while supporting Crested Butte Nordic.

Challenge yourself on the Cirque Series at Arapahoe Basin on September 5, 2026 in Keystone, Colorado. This scenic 9.4 mile mountain course with 2,211 ft of climbing delivers steep, technical trail and big alpine views in a capped field.

Experience high country single track around Taos Ski Valley with alpine climbs to Kachina and Fraser peaks. Choose the marathon or one of two half marathons, enjoy views and support local trails.

The TARC Fall Classic will take place in Carlisle on Saturday 5 September 2026. You can run between 10 and 50 miles.