US Ultramarathons

Browse our Ultramarathon Calendar for races organized in the USA.

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1,371 races

Dizzy Daze

Dizzy Daze 50K
No race in 2016
USA / Pacific / Washington / Seattle
Ultramarathon - 50 kilometers

Dizzy Daze

Dizzy Daze 100K
No race in 2016
USA / Pacific / Washington / Seattle
Ultramarathon - 100 kilometers

Croom Trail

Croom Trail 50K Fools Run
April 04, 2015 The race has already taken place.
USA / South Atlantic / Florida / Brooksville
Ultramarathon - 50 kilometers
Trail

Croom Trail

Croom Trail 50M Fools Run
April 04, 2015 The race has already taken place.
USA / South Atlantic / Florida / Brooksville
Ultramarathon - 50 miles
Trail

Bloomington to West Lafayette (Indiana)

2 Person Team
April 11, 2015 The race has already taken place.
USA / East North Central / Indiana / Bloomington
Ultramarathon - 100 miles
Road Running Relay

Bloomington to West Lafayette (Indiana)

7 Person Team
April 11, 2015 The race has already taken place.
USA / East North Central / Indiana / Bloomington
Ultramarathon - 100 miles
Road Running Relay

Bloomington to West Lafayette (Indiana)

3 Person Team
April 11, 2015 The race has already taken place.
USA / East North Central / Indiana / Bloomington
Ultramarathon - 100 miles
Road Running Relay

Bloomington to West Lafayette (Indiana)

6 Person Team
April 11, 2015 The race has already taken place.
USA / East North Central / Indiana / Bloomington
Ultramarathon - 100 miles
Road Running Relay

Bloomington to West Lafayette (Indiana)

5 Person Team
April 11, 2015 The race has already taken place.
USA / East North Central / Indiana / Bloomington
Ultramarathon - 100 miles
Road Running Relay

Bloomington to West Lafayette (Indiana)

4 Person Team
April 11, 2015 The race has already taken place.
USA / East North Central / Indiana / Bloomington
Ultramarathon - 100 miles
Road Running Relay

Bloomington to West Lafayette (Indiana)

8 Person Team
April 11, 2015 The race has already taken place.
USA / East North Central / Indiana / Bloomington
Ultramarathon - 100 miles
Road Running Relay

Earth Day 50K / 15 Mile Trail Race

Earth Day 50K Trail Race
April 18, 2015 The race has already taken place.
USA / East North Central / Illinois / Crystal Lake
Ultramarathon - 50 kilometers
Trail Relay

The Aoudad Trail Run

The Aoudad 50K
April 25, 2015 The race has already taken place.
USA / West South Central / Texas / Leakey
Ultramarathon - 50 kilometers
Hilly Trail

Cheyenne Mtn. Trail Race

Cheyenne Mtn. Trail 50K Race
April 25, 2015 The race has already taken place.
USA / Mountain Region / Colorado / Cheyenne Mountain State Park
Ultramarathon - 50 kilometers
Trail Epic Endurance Events Fast

OBX Ultramarathon

No race in 2016
USA / South Atlantic / North Carolina / Corolla
Ultramarathon - 50 kilometers
Flat Fun Green Trail North Carolina Ultra Series Sand Barefoot