US Ultramarathons

Browse our Ultramarathon Calendar for races organized in the USA.

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1,361 races

SweetH20 50K

April 29, 2017 The race has already taken place.
USA / South Atlantic / Georgia / Sweetwater Creek State Park, Lithia Springs
Ultramarathon - 50 kilometers
Trail Douglas County Rogue Runners

Sybil Ludington 50K Run

April 29, 2017 The race has already taken place.
USA / Mid-Atlantic / New York / Carmel
Ultramarathon - 50 kilometers
Hilly Relay

XTERRA Spring Eagle

XTERRA Spring Eagle 50K
April 29, 2017 The race has already taken place.
USA / Pacific / Washington / Soaring Eagle Regional Park
Ultramarathon - 50 kilometers
Northwest Trail Runs Hilly Trail

Jack Bristol Lake Waramaug

Jack Bristol Lake Waramaug 100k
April 30, 2017 Race day !
USA / New England / Connecticut / New Preston
Ultramarathon - 100 kilometers

Jack Bristol Lake Waramaug

Jack Bristol Lake Waramaug 50k
April 30, 2017 Race day !
USA / New England / Connecticut / New Preston
Ultramarathon - 50 kilometers

Jack Bristol Lake Waramaug

Jack Bristol Lake Waramaug 50M
April 30, 2017 Race day !
USA / New England / Connecticut / New Preston
Ultramarathon - 50 miles

Palm Bluff Trail Race and Ultra "Margaritas & Manure"

Palm Bluff Trail Race and Ultra "Margaritas & Manure" 50K
April 30, 2017 Race day !
USA / South Atlantic / Florida / Osteen
Ultramarathon - 50 kilometers
Trail

Palm Bluff Trail Race and Ultra "Margaritas & Manure"

Palm Bluff Trail Race and Ultra "Margaritas & Manure" 50M
April 30, 2017 Race day !
USA / South Atlantic / Florida / Osteen
Ultramarathon - 50 miles
Trail

Running Fit Trail Weekend

Running Fit Trail 50K
April 30, 2017 Race day !
USA / East North Central / Michigan / Pinckney
Ultramarathon - 50 kilometers
RunningFit Hilly Trail

The Ironmasters Challenge

The Ironmasters Challenge - 50K Ultra
April 30, 2017 Race day !
USA / Mid-Atlantic / Pennsylvania / Pine Grove Furnace State Park, Gardners
Ultramarathon - 50 kilometers
Walk Trail

Trail Marathon, Half Marathon, 50K, Road Ends 5 Mile

Trail 50K
April 30, 2017 Race day !
USA / East North Central / Michigan / Silver Lake, Pinckney
Ultramarathon - 50 kilometers
Trail