Trail ultramarathons in the United States
Find trail ultramarathons in the United States. Compare 266 upcoming events by date and location. Open a race guide for the course, recorded editions and official entry information where available.
Events to explore include Bridge Burner Ultra, Canyonlands Ultra and Fancy Nonsense.
Narrow your search to Texas, California and Arizona, or browse the other locations below.
285 listed events · 266 with upcoming dates
Upcoming ultramarathons
266 matching events, earliest date first. Entry availability is shown separately.
Bridge Burner Ultra
USACanon City, Colorado
Trail races through the Royal Gorge area, starting in Canon City and following riverside paths and mountain trails.
· 50K
Race details, entry and past editions →Entry information ↗Canyonlands Ultra
USAMoab, Utah
Desert trail races near Moab, from a 15K course to a 100K ultra.
· 100K / 50K
Race details, entry and past editions →Entry information ↗Fancy Nonsense
USAPalatine, Illinois
Autumn trail races at Deer Grove West. The 2026 event moves from Palos Forest Preserve while trail construction takes place.
· 50K
Race details, entry and past editions →Fields of Gold Trail Run
USAMarble Falls, Texas
Autumn trail races at Shaffer Bend, with fixed-distance races, a twelve-hour challenge and separate morning and evening 5K events.
· 50K
Race details, entry and past editions →Entry information ↗Firewater Ultra
USAGreenback, East Tennessee
Trail ultras along Tellico Reservoir, with sunrise and sunset starts for the 50K and a shorter running course.
· 100K / 50K
Race details, entry and past editions →Entry information ↗Fonta Flora 50K and Half Marathon
USANebo, North Carolina
Lakeside trail races around Lake James, starting and finishing at Whippoorwill Farm.
· 50K · Entry closed
Race details, entry and past editions →Gate2Gate Trail Run
USAAlachua, Florida
One- and two-loop trail races through San Felasco Hammock Preserve, supporting the park’s friends organisation.
· 50K
Race details, entry and past editions →Entry information ↗Georgia Sky to Summit
USASky Valley, Georgia
Mountain trail races based at Sky Valley Resort, with a Saturday ultra and a Sunday shorter course.
· 50K
Race details, entry and past editions →Entry information ↗Hare Mountain Trail Runs
USAHagarville, Arkansas
Rugged races on the Ozark Highlands Trail, from a short mountain ascent to a 100-mile point-to-point course.
· 50K
Race details, entry and past editions →Entry information ↗Lake Murray Endurance Run
USAArdmore, Oklahoma
Trail races of several lengths through Lake Murray State Park. Confirm the precise start location in the final briefing: current organiser text…
· 100K / 50K
Race details, entry and past editions →Entry information ↗Nelson’s Summit 50/50
USASalamanca, New York
Trail races on the rolling cross-country ski trails of Allegany State Park, based at the Art Roscoe warming hut.
· 50K
Race details, entry and past editions →Entry information ↗New Hope Wesleyan Ultra Trail Run
USACorydon, Indiana
Woodland trail races at O’Bannon Woods State Park, with four distances and staggered starts.
· 50K
Race details, entry and past editions →Entry information ↗No Name Trail Races
USAAgoura, California
Trail races through Cheeseboro Canyon in the Santa Monica Mountains, with an ultra, half marathon and shorter course.
· 50K
Race details, entry and past editions →Entry information ↗Patapsco Valley 50K and 25K
USACatonsville, Maryland
Trail races through Patapsco Valley State Park, starting and finishing at CCBC Catonsville.
· 50K
Race details, entry and past editions →Entry information ↗PB&J 50K and 25K
USAPrince William Forest Park, Virginia
A free trail competition on rolling woodland loops in Prince William Forest Park. Both distances start at Telegraph Road Pavilion; entry is at capacity.
· 50K · Entry closed
Race details, entry and past editions →Prisoner of War Trail Race
USASpartanburg, South Carolina
Trail races on woodland figure-eight loops at Croft State Park, returning to the Activity Center aid station.
· 50K
Race details, entry and past editions →Entry information ↗Trail Run at Sly Park - Fall
USAPollock Pines, California
Autumn trail races around Jenkinson Lake at Sly Park Recreation Area.
· 50K
Race details, entry and past editions →Entry information ↗Womp Romp
USANorwell, Massachusetts
Volunteer-run trail races through Wompatuck State Park, with woodland trails and some paved sections.
· 50K · Entry closed
Race details, entry and past editions →WXT Ultra
USATitusville, New Jersey
Trail races through Washington Crossing Park and nearby woodland, with short road sections. The 2026 start and finish are at Phillips Farm while the…
· 50K
Race details, entry and past editions →Entry information ↗Hixon 50
USALa Crosse, Wisconsin
A weekend of trail races in La Crosse’s wooded bluffs, with short courses and a children’s race on Saturday and longer races on Sunday.
· 50K · Entry closed
Race details, entry and past editions →Stone Steps 50K and 27K Trail Run
USACincinnati, Ohio
Trail races through Mount Airy Forest, starting and finishing at The Oval.
· 50K
Race details, entry and past editions →Entry information ↗WTF Dark Sky 220, Cherry Springs 110 and Wooly 50K
USALock Haven / Woolrich, Pennsylvania
Fundraising trail adventures in Pennsylvania, with supported, self-supported and unsupported participation. Each distance has a separate start date and…
· 50K
Race details, entry and past editions →Entry information ↗Camino De Los Muertos
USALewisville, Texas
Trail races at the Lewisville Lake Environmental Learning Area, with five adult distances and a one-mile youth run.
· 100K / 50K
Race details, entry and past editions →Entry information ↗Cougar Mountain Trail Run
USABellevue, Washington
Autumn trail races through Cougar Mountain Regional Wildland Park, starting at Sky Country Trailhead.
· 50K
Race details, entry and past editions →Entry information ↗Fall Back Blast
USAEau Claire, Wisconsin
An autumn trail running festival at Lowes Creek County Park, with five solo distances and a 50K relay.
· 50K
Race details, entry and past editions →Entry information ↗Fall Back into the Trails Series
USALagrangeville, New York
Trail races on a hilly 10K loop at Red Wing Recreation Area. The 100K starts on Saturday afternoon; the 50K and 10K start on Sunday morning.
· 100K
Race details, entry and past editions →Entry information ↗Hell Creek 100
USASylvan Grove, Kansas
Trail races on the Switchgrass trails beside Wilson Lake, including the Pure Hell 140 and shorter solo options. A separate team relay is also offered.
· 100K
Race details, entry and past editions →Entry information ↗Naatsisaan Trail Races
USANavajo Mountain, Utah
Trail and dirt-road races from Navajo Mountain High School, with a mountain ultra, ten-mile race and afternoon community 5K.
· 50K
Race details, entry and past editions →Entry information ↗Pumpkin Butt
USAKennesaw, Georgia
A free 50K club trail run for GUTS members, using five approximately 10K loops. The organiser classifies this as an unofficial run because of permit…
· 50K
Race details, entry and past editions →Entry information ↗Terror Trails Ultra
USAWaxhaw, North Carolina
Halloween trail races at Cane Creek Park, ranging from a short woodland loop to a two-loop ultra.
· 50K
Race details, entry and past editions →Entry information ↗Race archive
Past races and previous editions
Looking back at a race? Browse the guides below for recorded editions. This section also includes events awaiting a new date and cancelled editions. Previous editions of races in the upcoming calendar are available through their race guides above.
Bimblers Bluff 50K
USAGuilford, Connecticut
A 50K race through connected woodland preserves, using rocky trails and forest roads in southern Connecticut.
Next date not listed
Race guide and recorded editions →City to Sky Trail Races
USAMissoula, Montana
Mountain trail races connecting Missoula and its surrounding ridges, with 50K and 25K courses.
Next date not listed
Race guide and recorded editions →Frozen Trail Runfest
USAEugene
Frozen Trail Runfest — historical running results.
Next date not listed
Race guide and recorded editions →G.O.A.T.z Trail Runs
USAOmaha, Nebraska
Trail and grass races around Glenn Cunningham Lake, with five distances from five miles to fifty miles.
Next date not listed
Race guide and recorded editions →Glacial Trail 50
USAGreenbush, Wisconsin
Fifty-mile and fifty-kilometre trail races following the Ice Age Trail in the Northern Kettle Moraine State Forest.
Next date not listed
Race guide and recorded editions →Hellgate
USAFincastle
Hellgate — historical running results.
Next date not listed
Race guide and recorded editions →Browse states, counties and areas
Choosing a race in United States
The unfiltered upcoming calendar includes events in Moab (5), Colorado Springs (4), Burnet (3). Use the town filter to compare locations, then check the race guide for the start venue and organiser’s travel information.
Questions about ultramarathons in United States
Which trail ultramarathons are coming up in the United States?
Bridge Burner Ultra is listed for 24 October 2026. Canyonlands Ultra is listed for 24 October 2026. Fancy Nonsense is listed for 24 October 2026. Check the race guide and organiser’s latest information before making plans.
Where can I find race entry details for the United States?
Follow the link from the race guide to the organiser or entry provider, where one is available. Check the entry deadline, eligibility and current availability there. A listed race date does not necessarily mean entries are still open.
Why has a race moved out of the upcoming calendar?
Once its listed dates have passed, a race moves to the past-editions view unless another upcoming edition is recorded. Cancelled events also leave the upcoming list. The race guide stays available, and the event returns when a new date is added.