US Ultramarathons

Browse our Ultramarathon Calendar for races organized in the USA.

1,427 races

Zumbro 100

Zumbro Midnight 50 Mile
04/08/2017 - 00:01
North America / USA / West North Central / Minnesota / Zumbro Falls
Ultramarathon
Night Race Trail Running

Zion Ultras

50K
04/21/2017 - 06:00
North America / USA / Mountain Region / Utah / Springdale
Ultramarathon
Desert Trail Running Hilly

Zion Ultras

100 Mile
04/20/2018 - 06:00
North America / USA / Mountain Region / Utah / Springdale
Ultramarathon
Desert Western States Qualifier Trail Running Hilly

Zion Ultras

100k
04/20/2018 - 06:00
North America / USA / Mountain Region / Utah / Springdale
Ultramarathon
Desert Trail Running Hilly

ZION ULTRAMARATHONS

50 K
04/21/2018 - 06:00
North America / USA / Mountain Region / Utah / Virgin
Ultramarathon
Running

ZION ULTRAMARATHONS

100 Mile
04/20/2018 - 06:00
North America / USA / Mountain Region / Utah / Virgin
Ultramarathon
Running

ZION ULTRAMARATHONS

100 K
04/20/2018 - 06:00
North America / USA / Mountain Region / Utah / Virgin
Ultramarathon
Running

Youngstown Ultra Trail Classic

Youngstown Ultra Trail Classic 50K
09/16/2017 - 08:00
North America / USA / East North Central / Ohio / Youngstown
Ultramarathon
Trail Running

Y'OPA Halloween Costume 5K Run

10/28/2017 - 10:00
North America / USA / East North Central / Michigan / Portage
Ultramarathon
Running

Yeti Snakebite 50/50

Yeti Snakebite 50K
08/27/2017 - 08:00
North America / USA / South Atlantic / Georgia / Lithia Springs
Ultramarathon
Trail Running

Yankee Winter Trail Run

50 Mile
01/06/2018 - 06:00
North America / USA / East North Central / Michigan / Middleville
Ultramarathon
Trail Running

Yankee Winter Trail Run

50K
01/06/2018 - 08:00
North America / USA / East North Central / Michigan / Middleville
Ultramarathon
Trail Running
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