United States
- Alabama 55
- Alaska 15
- Arizona 108
- Arkansas 44
- California 356
- Colorado 131
- Connecticut 40
- Delaware 16
- District of Columbia 15
- Florida 175
- Georgia 97
- Hawaii 9
- Idaho 14
- Illinois 70
- Indiana 71
- Iowa 31
- Kansas 36
- Kentucky 71
- Louisiana 30
- Maine 26
- Maryland 71
- Massachusetts 61
- Michigan 103
- Minnesota 48
- Mississippi 15
- Missouri 65
- Montana 34
- Nebraska 21
- Nevada 27
- New Hampshire 30
- New Jersey 73
- New Mexico 29
- New York 143
- North Carolina 164
- North Dakota 2
- Ohio 91
- Oklahoma 44
- Oregon 83
- Pennsylvania 183
- Puerto Rico
- Rhode Island 8
- South Carolina 68
- South Dakota 6
- Tennessee 73
- Texas 242
- Utah 66
- Vermont 20
- Virginia 145
- Washington 124
- West Virginia 30
- Wisconsin 67
- Wyoming 7
Trail Running Calendar United States 2026-2027
Explore the best trail runs in the United States for 2026-2027! Our updated list features 4012 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!
May 2027
80s-themed running event in Tulsa offering half, quarter, 5K, 1-mile, kids dash and virtual options with a costume contest, chip timing, medals, shirts, and volunteer roles.
Multiple in-person and virtual race options at Marine Creek Lake in Fort Worth on 05/02/2027, from a Kids Dash to a 13.1 mile half marathon.
Timed trail racing on a slightly technical 2.0 mile single track loop at White Lake State Park with 6, 12 and 24 hour options and on-site aid and crew areas.
Trail ultramarathon at Riverside Farm in Pittsfield VT offering distances from 10 miles to 200 miles through Green Mountain terrain.
Low-key evening trail series in Forest Park with three five race seasons, 4 to 7 mile courses, standings for regular participants, and a post season awards party.
Loop based trail event in Sylvan Park May 7–9, 2027 offering Solo, Double and Limitless formats on a 4.167-mile loop.
A multi-day trail relay at Zion Ponderosa Ranch with a 124.8-mile course, mixed singletrack and jeep trails, village camping, pool and showers, and significant elevation gain.
Trail races at Yellow River State Forest on May 7–8, 2027 include 5K, 10K and half marathon options with timed results and age-group awards.
A 100 miler in Old Fort NC through the Black Mountains to Mt Mitchell, organized by RUN828 Foundation with a 39 hour cutoff and specific qualification and gear requirements.
A multi-route trail event on Tiger Mountain with three summit loops, offering a 50k option plus The Ascent, Big Cat, and The Ambush over a May weekend in Issaquah.
Trail running festival in Traverse City, MI featuring races and relays from 5K to 100K on trails through the Pere Marquette Forest with onsite post-race amenities.
Self supported marathon in San Diego on May 8, 2027, run on an unmarked counter clockwise course with restrooms at Torrey Pine North around mile 16.
Trail marathon and 10 mile on Sag Valley Trail through Cap Sauers Nature Preserve with wide horse trail, multiple aid stations, and notable elevation.
A women focused trail running event at Cheyenne Mountain State Park on May 8, 2027 offering distances from 4 mile to 50K across limestone, singletrack and ridgelines, with cupless aid stations and race packet pickup the day before.
Scenic timed half marathon through Napa vineyards from Quintessa Winery to Yountville, featuring winery aid stations, a Finish Line Wine Village with tastings, shuttle service and a finisher medal.
Timed 6 and 12 hour trail events at Valley Falls State Park featuring mixed terrain, relay options, aid stations, on-course mementos, and a charity beneficiary.
Trail races near Fort Collins offering 25 miles (≈5,500 ft gain) and 50 miles (≈11,000 ft gain) on mostly singletrack with staffed aid stations.
A multi-distance event in Lewes, Delaware with 5K, 10K and half marathon options plus race walk and heavy march categories. The weekend includes an educational exhibit, vendors and live music while supporting wounded warriors and homeless veterans.
A community trail run and hike on May 8, 2027 at the Point Arena and Stornetta Lands, co-hosted by ACORN and Pacific Community Charter School. Proceeds support the Students Protecting the Coast environmental education program.
Trail To Recovery 5K and 1 Mile run/walk in Norman, OK supports local recovery court programs and mental health services. The trail course runs through Ruby Grant Park and includes awards and finisher medals for participants.