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Trail ultramarathons in North America
Compare trail ultramarathons across North America and choose where to compete next. Compare 268 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 Thunder River, Autumn Squatch and Fire on the Mountain.
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290 listed events · 268 with upcoming dates
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Upcoming ultramarathons
268 matching events, earliest date first. Entry availability is shown separately.
Thunder River
USACascade Locks, Oregon
Columbia River Gorge trail races finishing at Marine Park, with a looped 50K and a point-to-point 25K.
· 50K
Race details, entry and past editions →Entry information ↗Autumn Squatch
USALewis Center, Ohio
Autumn trail races on the Rocks and Roots trails at Alum Creek State Park, using alternating north and south loops.
· 50K
Race details, entry and past editions →Entry information ↗Fire on the Mountain
USALittle Orleans, Maryland
Trail ultras and a shorter forest race at Green Ridge State Forest, using trails and forest roads from Point Lookout.
· 50K
Race details, entry and past editions →Entry information ↗Mamba 100
USAMemphis, Tennessee
Ultramarathons and a shorter trail race on the Wolf River trails. Different lead-in sections join a flat woodland loop; each distance has its own start.
· 100K
Race details, entry and past editions →Entry information ↗Big Texas Ultra
USAJohnson City, Texas
Trail races at Flat Creek Crossing Ranch, with an additional qualification-only championship division for the 100K.
· 100K / 50K
Race details, entry and past editions →Entry information ↗Broken Toe Trail Races
USAWilmington, Ohio
Woodland trail races around Caesar Creek Lake, with rolling hills, creek crossings and one or two laps of the campground trail course.
· 50K
Race details, entry and past editions →Entry information ↗Chino Hills Trail Run — Fall
USABrea, California
Autumn trail races through chaparral, oak woodland and the hills of Chino Hills State Park.
· 50K
Race details, entry and past editions →Entry information ↗Conquer the Castle
USAMayfield, Ohio
Trail races through North Chagrin Reservation with woodland loops, creek crossings and a visit to Squire’s Castle.
· 100K / 50K
Race details, entry and past editions →Entry information ↗Dogwood Canyon Trail Runs
USALampe, Missouri
Hilly trail races at Dogwood Canyon, with the 25K and 50K on Saturday and 15K on Sunday. Combined weekend challenges use these same races.
· 50K
Race details, entry and past editions →Entry information ↗Ferris 50
USAMinden, Nevada
Trail races through Carson Valley, with a separate short children’s race. The adult races start at Douglas County Fairgrounds and finish at TJ’s…
· 50K
Race details, entry and past editions →Entry information ↗Grand Ridge Trail Run
USAIssaquah, Washington
Forest trail races in the Cascade foothills, with four adult distances and a free children’s run. Distances are approximate; the advertised…
· 50K
Race details, entry and past editions →Entry information ↗Kessel Run Ultra
USAFruita, Colorado
High-desert trail races on the North Fruita singletrack, with five distances and separate morning starts.
· 50K
Race details, entry and past editions →Entry information ↗Liberty’s Lost Treasure
USAGuthrie, Oklahoma
Trail races around Liberty Lake, using repeated loops for the longer distances and an out-and-back 5K.
· 50K
Race details, entry and past editions →Entry information ↗Miner 49er
USADubuque, Iowa
Trail races through Mines of Spain, with woodland paths, prairie sections, stream crossings and views of the Mississippi River.
· 50K
Race details, entry and past editions →Entry information ↗Mingus Madness 50K
USAPrescott Valley, Arizona
A rugged, minimally supported mountain adventure. The organiser describes this as an unofficial, non-permitted event; the advertised 50K route is…
· 50K
Race details, entry and past editions →Entry information ↗Mountain Masochist Trail Run
USAMontebello, Virginia
Mountain trail ultras starting and finishing at Montebello Campground in the Blue Ridge Mountains.
· 100K / 50K · Entry closed
Race details, entry and past editions →Mountaineer Rumble
USABlacksburg, South Carolina
Trail races on repeated loops of the CCC Multi-Use Trail at Kings Mountain State Park, with distance-specific lead-in sections for the metric ultras.
· 100K / 50K
Race details, entry and past editions →Entry information ↗Pain in Green Lane
USAGreen Lane, Pennsylvania
One- and two-loop trail races around Green Lane’s lake and reservoir, combining singletrack, gravel and paved paths.
· 50K
Race details, entry and past editions →Entry information ↗Paleozoic Trail Runs - Silurian Fall
USAPalos Park, Illinois
Trail races on the Sag Valley trails, using a 25K loop of gravel paths and woodland sections. The organiser lists the permit as pending.
· 50K
Race details, entry and past editions →Entry information ↗Ponderosa Polar Challenge
USAOrderville, Utah
Trail distances and timed challenges on interchangeable loops at Zion Ponderosa Ranch Resort, near Zion National Park.
· 100K / 50K
Race details, entry and past editions →Entry information ↗Rio Del Lago Endurance Runs
USAGranite Bay, California
Trail ultras starting at Beals Point, following the lakes and foothills between Folsom and Auburn.
· 50K
Race details, entry and past editions →Entry information ↗Run the Rock
USATerrebonne, Oregon
Trail races around Smith Rock and Gray Butte, with the 50K and 25K on Saturday and the half marathon on Sunday.
· 50K · Entry closed
Race details, entry and past editions →Sanders’ Saunter Charity Race
USALawrence, Kansas
Charity trail races around Clinton Lake, with three distances and staggered starts from Overlook Park.
· 50K
Race details, entry and past editions →Entry information ↗Screaming Monkey
USAKeithville, Louisiana
Technical woodland races on the Monkey Trails surrounding a chimpanzee sanctuary, with shorter races and overnight ultras.
· 100K / 50K
Race details, entry and past editions →Entry information ↗TARC Stone Cat Trail Festival
USAIpswich, Massachusetts
A trail festival on rolling woodland trails in Willowdale State Forest, with adult distance races and a short youth fun run.
· 100K · Entry closed
Race details, entry and past editions →tBunk Endurance Challenge
USALaGrange, Wisconsin
Multiple fixed-distance ultras on the Nordic Trail system in the Southern Kettle Moraine State Forest.
· 50K
Race details, entry and past editions →Entry information ↗Veterans Trail Festival
USAHookstown, Pennsylvania
A veterans charity running festival at Raccoon Creek State Park, formerly listed as Resilient Service Members Classic. The longer races use woodland…
· 50K
Race details, entry and past editions →Entry information ↗Wild Florida Trail Run
USAWhite Springs, Florida
Trail races along the Suwannee River, with all distances finishing at Stephen Foster Folk Culture Center State Park.
· 50K
Race details, entry and past editions →Entry information ↗Bold Coast Bash
USACutler, Maine
Technical coastal trail races over rocks, roots and bog bridges on a figure-eight course near the cliffs of Maine’s Bold Coast.
· 50K · Entry closed
Race details, entry and past editions →Last Trail Standing
USAPittsburgh, Pennsylvania
Woodland trail races through Settlers Cabin Park, with the longer courses following repeated out-and-back loops.
· 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.
Open the race archive to browse past events and races awaiting a new date.
View full race archive (22) →