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Ultramarathons Across the US

Find 50K, 50-mile, 100K, and 100-mile ultramarathons. The definitive US ultra running event directory.

Showing a selection of 91 upcoming events

Browse Ultramarathons by State

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Upcoming Ultramarathons

Washington Island Ultra
Ultra

Washington Island Ultra

July 23, 2026
Washington Island, WI
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Ultra

2026 Washington Island Ultra Relay

Washington Island, WI

Ultra

2026 Washington Island Ultra Relay

July 24, 2026
Washington Island, WI
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Hawaii Kai Ultra Run XTreme 2026
Ultra

Hawaii Kai Ultra Run XTreme 2026

July 25, 2026
Honolulu, HI
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Ultra

Pikes Peak Ultra

Colorado Springs, CO

Ultra

Pikes Peak Ultra

July 25, 2026
Colorado Springs, CO
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DURTY B-EE-RR-UN 6hr Fat Ass Ultra
Ultra

DURTY B-EE-RR-UN 6hr Fat Ass Ultra

August 1, 2026
Seminole, FL
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Last Herron Standing- Backyard Ultra
Ultra

Last Herron Standing- Backyard Ultra

August 1, 2026
Kalispell, MT
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Anchor Down Ultra
Ultra

Anchor Down Ultra

August 7, 2026
Bristol, RI
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Ultra

Larrabee Lakes

Bellingham, WA

Ultra

Larrabee Lakes

August 8, 2026
Bellingham, WA
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Ultra

Last Buckeye Standing Backyard Ultra

Galena, OH

Ultra

Last Buckeye Standing Backyard Ultra

August 8, 2026
Galena, OH
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Kennekuk Road Runners - Howl at the Moon 8/4 hour Ultra
Ultra

Kennekuk Road Runners - Howl at the Moon 8/4 hour Ultra

August 8, 2026
Danville, IL
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Ultra

Leadville Trail 100 Run

Leadville, CO

Ultra

Leadville Trail 100 Run

August 15, 2026
Leadville, CO
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Ultra

Tour De Tolerance

Santa Teresa, NM

Ultra

Tour De Tolerance

August 16, 2026
Santa Teresa, NM
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Dog Days ULTRA
Ultra

Dog Days ULTRA

August 22, 2026
Missoula, MT
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Prospect Acres Ranch 2,4 & 8 hour Ultra
Ultra

Prospect Acres Ranch 2,4 & 8 hour Ultra

August 22, 2026
Franklin, NH
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Ocean State Ultra
Ultra

Ocean State Ultra

August 29, 2026
West Greenwich, RI
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Orange Goes Pink - Donation Backyard Ultra
Ultra

Orange Goes Pink - Donation Backyard Ultra

August 30, 2026
Leesburg, VA
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Dusk to Dawn Relay + Ultra 2026
Ultra

Dusk to Dawn Relay + Ultra 2026

September 4, 2026
Wendover, UT
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Laps For Love Backyard Ultra
Ultra

Laps For Love Backyard Ultra

September 5, 2026
Wichita, KS
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Cherry Hill Farm Ultra
Ultra

Cherry Hill Farm Ultra

September 5, 2026
Gorham, ME
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Frozen Head Ultra Marathon
Ultra

Frozen Head Ultra Marathon

September 6, 2026
Wartburg, TN
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Ultra

Dog Days ULTRA

Missoula, MT

Ultra

Dog Days ULTRA

September 6, 2026
Missoula, MT
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Ultra

Race for Remembrance - 9/11 Tribute Run - Washington DC to New York NY

Washington, DC

Ultra

Race for Remembrance - 9/11 Tribute Run - Washington DC to New York NY

September 8, 2026
Washington, DC
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Farm to Farm Ultra
Ultra

Farm to Farm Ultra

September 14, 2026
Freeport, ME
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Ultra

Run Rabbit Run

Steamboat Springs, CO

Ultra

Run Rabbit Run

September 15, 2026
Steamboat Springs, CO
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Find ultramarathons near you →
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Frequently asked questions

What is an ultramarathon?▾
An ultramarathon is any race longer than the standard marathon distance of 26.2 miles. Common ultra distances are 50K (31 miles), 50 miles, 100K (62 miles), and 100 miles. Most ultras take place on trails.
What are the most famous ultramarathons in the US?▾
Western States 100 is the most prestigious, followed by Leadville Trail 100, Hardrock 100, and UTMB Canyons. The JFK 50 Mile is the oldest US ultra, running since 1963. Find all of these on RACE.
How do I train for my first ultra?▾
Most runners build up to their first 50K after completing a marathon. Training typically spans 16-24 weeks with weekly mileage of 40-60 miles, including back-to-back long runs on weekends to simulate race-day fatigue.
Do I need trail experience for an ultramarathon?▾
While many ultras are on trails, some are on roads or mixed terrain. For trail ultras, practice running on uneven surfaces and hills. A 50K on a relatively flat trail is a great first ultra for road runners making the transition.

Explore Other Endurance Sports

Running Races

Running Events

Marathons

26.2 miles of grit

Half Marathons

The perfect 13.1

5K Races

Fast, fun, for everyone

10K Races

The next step up

Triathlons

Swim, bike, run

Obstacle Course Races

Mud, walls, glory

Cycling Events

Road, gravel, gran fondo

Swimming Events

Open water awaits

Trail Running

Dirt over pavement

Relay Races

Run it together