United States
- Alabama 47
- Alaska 22
- Arizona 104
- Arkansas 27
- California 344
- Colorado 137
- Connecticut 46
- Delaware 9
- District of Columbia 11
- Florida 135
- Georgia 107
- Hawaii 3
- Idaho 25
- Illinois 87
- Indiana 62
- Iowa 43
- Kansas 34
- Kentucky 43
- Louisiana 29
- Maine 33
- Maryland 60
- Massachusetts 51
- Michigan 114
- Minnesota 58
- Mississippi 16
- Missouri 70
- Montana 37
- Nebraska 18
- Nevada 31
- New Hampshire 45
- New Jersey 54
- New Mexico 28
- New York 154
- North Carolina 129
- North Dakota 1
- Ohio 111
- Oklahoma 28
- Oregon 71
- Pennsylvania 179
- Puerto Rico
- Rhode Island 11
- South Carolina 56
- South Dakota 11
- Tennessee 69
- Texas 181
- Utah 86
- Vermont 34
- Virginia 149
- Washington 111
- West Virginia 25
- Wisconsin 73
- Wyoming 14
Trail Running Calendar United States 2026-2027
Explore the best trail runs in the United States for 2026-2027! Our updated list features 3937 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!
December 2026
Trail races at East Fork State Park on December 6, 2026, using a 6.55 mile singletrack loop with Quarter, Half, and Full options, on-course aid stations, chip timing, race shirt if registered by 11/14, and a finisher medal for all finishers.
Caloosa Fest in Alva, Florida offers a Half Marathon and a 5K held on the Caloosahatchee Regional Park mountain bike trails, featuring single track, grass sections, aid stations, packet pickup options, and on-site vendors.
Trail races at Mead's Quarry in Knoxville include a half marathon, a 10K and a kids one mile on mixed technical singletrack and flowing mountain bike trail. The half marathon has a four hour limit and aid stations with small cups.
A holiday running event at Stars & Stripes Park offering Kids Dash, 1 mile, chip timed 5K and 10K, a virtual option, a costume contest, and finishers shirts and medals for all participants.
A multi-distance trail event at FDR State Park on December 6, 2026 offering options from a 10k to a 46 Miler plus a virtual 400 Mile challenge.
Single-loop urban ultramarathon in San Francisco from Twin Peaks offering 50 mile and 50K options, informal aid stations, and a mile 25 cutoff.
A Christmas themed race day in Indianapolis with multiple distances, a kids dash, a virtual option, and a volunteer-then-run category. Races include designer shirts, custom bibs, finisher medals, chip timing, awards, and free photos.
A set of in-person and virtual runs on December 6, 2026 along the Chesapeake & Ohio Canal path in Washington DC with 5K, half marathon, and marathon distances.
An ultramarathon in Prospect Park, Brooklyn on December 6, 2026 offering 50K and 50 mile looped courses with potluck-style aid, Skratch Labs hydration, chip timing, and finisher belt buckles.
Multiple USATF certified races take place on the Dismal Swamp course in Chesapeake, VA, including 50K, marathon, half marathon and a 50K relay. Aid stations are provided and finishers receive apparel and medals.
Holiday-themed Jingle Bell races in Valencia on December 6 offering 5k, 10k, 15k and a half marathon on marked looped trails with aid stations and finisher medals.
Eight hour trail endurance race at Terrapin Nature Park where each 2.8 mile lap fills a participant stocking with surprises and top finishers earn awards.
Trail 5K and 10K at Elfin Forest Recreational Reserve with chip timing, a 1K kids run, a 10K team competition, and proceeds shared with local conservancy.
Trail races at Guana Research Reserve on December 6, 2026, featuring 50K (individual and team) and 12K on shaded loop trails with finisher shirts.
A multi-day staircase endurance series at Amicalola Falls State Park, Dec 9–13, 2026. Events range from a 12-hour 16-mile lap format to an 84-hour 180-mile option, offered solo or as team FlexRelay on the AT Approach Trail.
Multi-distance trail event at Tickfaw State Park in Springfield, LA, featuring a 3-mile river loop, aid stations, on-site lodging, race-day food, awards and event swag.
A self-supported looped ultra on St. George's Mayor's Loop where runners repeat a 6 mile loop every 90 minutes until the final lap decides winners.
A Last Person Standing race in Yucaipa, CA on Dec 11, 2026 with hourly 4.167-mile loops on rugged foothill terrain; limited camping and a published entry fee.