United States
- Alabama 54
- Alaska 15
- Arizona 106
- Arkansas 39
- California 369
- Colorado 144
- Connecticut 51
- Delaware 15
- District of Columbia 10
- Florida 165
- Georgia 117
- Hawaii 4
- Idaho 20
- Illinois 93
- Indiana 61
- Iowa 47
- Kansas 39
- Kentucky 49
- Louisiana 37
- Maine 35
- Maryland 61
- Massachusetts 56
- Michigan 134
- Minnesota 61
- Mississippi 18
- Missouri 67
- Montana 36
- Nebraska 20
- Nevada 34
- New Hampshire 47
- New Jersey 69
- New Mexico 31
- New York 163
- North Carolina 151
- North Dakota 1
- Ohio 114
- Oklahoma 45
- Oregon 82
- Pennsylvania 209
- Puerto Rico
- Rhode Island 11
- South Carolina 69
- South Dakota 11
- Tennessee 69
- Texas 206
- Utah 78
- Vermont 32
- Virginia 167
- Washington 124
- West Virginia 32
- Wisconsin 72
- Wyoming 13
Trail Running Calendar United States 2026-2027
Explore the best trail runs in the United States for 2026-2027! Our updated list features 4278 exciting trail runs across the country. Find your next trail run in the United States below and join the trail community at these great events!
August 2026
NorCal Spartan Event Weekend at Mahon Ranch features a Super 10K, a Sprint 5K, kids races across two days, and spectator access in Elk Grove, California.
Trail 5K and 10K at Dirt Farm Brewing in Bluemont VA on August 29, 2026, with virtual options and tiered entry fees.
Tough Mudder Chicago on August 29, 2026 at Richardson Adventure Farm offers 5K, 15K and an 8 hour Infinity course with multiple obstacles and a Mudder Village.
Two-day Spartan obstacle weekend at Summit at Bechtel Reserve with Sprint, Super, Beast, kids races, plus an obstacle workshop and spectator access.
Trail races on the single track Switchgrass Mountain Bike Trail at Wilson State Park, offering a 13(ish) mile half marathon and an approximately 32 mile 50K on exposed, hilly terrain.
Trail races on remote loop courses in Mount St. Helens National Volcanic Monument with 50K, 20 mile and half marathon options and lake and ridgeline scenery.
A 10 hour endurance run at Bluhm County Park on August 29, 2026, using a 4 to 4.1 mile loop with hourly cutoffs and a chip based prize system.
Trail race in Chequamegon-Nicolet National Forest offering 100-mile, 100k and 50k courses with campground arrangements for participants.
A muddy 3 mile obstacle run at Phil Moore Park on August 29, 2026, with 20 or more obstacles and a free kids play area.
A point to point 50 mile trail ultramarathon in Vowinckel PA along the northern Baker Trail with single track, 6,200 ft of climbing, and individual or relay entries.
A Last Man Standing ultrarun in Half Way MO where each 4.167 mile lap shortens the cutoff by one minute, on a rural rolling course with two aid stations and on site camping.
An 8.88 hour multi loop trail race in Atlanta each August with no DNFs, no cutoffs, no crew or pacers, and a flat $88.80 entry fee.
A multi-distance trail running weekend on August 29 to 30, 2026 with 50 Mile, 50K, Marathon and Half Marathon races; registration is closed.
Trail races at Grand Targhee on August 29, 2026 cover 7.1 miles with 2,212 feet of vertical gain across Sport, Expert, and Pro divisions plus a volunteer category. Per race prizes and season points are awarded and the field is capped at 500.
Summer Spirit Run at Magnuson Park on August 29 offers 5k, 10k and 15k options plus a Kids Dash and an Obstacle Dash with eight obstacles.
Trail races at Salt Springs Park, Montrose PA, offering 5K, 10K and a 50K five loop course through old growth forest and wetlands.
Trail races in St. Croix Falls offering marathon, half marathon and 10K on mixed single track and trail surfaces with a 150 runner online limit and race day registration.
Trail races in Waterville Valley NH with 50K, 23K, 4 mile and 1 mile options, cup less aid stations, required 50K gear, and finisher awards.
Trail runs through over 20 acres of sunflower fields in Buhler, KS on Aug 29, 2026, featuring 5K, 1 mile and a virtual option with finisher medals and shirts.