US Ultramarathons

Browse our Ultramarathon Calendar for races organized in the USA.

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1,361 races

Seneca Creek Greenway Trail Marathon & 50K

Seneca Creek Greenway Trail 50K
March 03, 2018 Race day in 10 months
USA / South Atlantic / Maryland / Damascus
Ultramarathon - 50 kilometers
Interview

Everglades Ultras

Everglades 50K Trail Race
February 17, 2018 Race day in 10 months
USA / South Atlantic / Florida / Fakahatchee Strand Preserve State Park
Ultramarathon - 50 kilometers
Trail

Everglades Ultras

Everglades 50 Mile Trail Race
February 17, 2018 Race day in 10 months
USA / South Atlantic / Florida / Fakahatchee Strand Preserve State Park
Ultramarathon - 50 miles
Trail

Deception Pass

Deception Pass 50K
December 10, 2017 Race day in 8 months
USA / Pacific / Washington / Oak Harbor
Ultramarathon - 50 kilometers
Trail Rainshadow Running

Frozen Trail Runfest

Frozen Trail Runfest 50K
December 09, 2017 Race day in 8 months
USA / Pacific / Oregon / Buford Park, Mt Pisgah - Eugene
Ultramarathon - 50 kilometers
Trail

High Desert 50K Ultramarathon and 30K

High Desert 50K Ultramarathon
December 03, 2017 Race day in 7 months
USA / Pacific / California / Ridgecrest
Ultramarathon - 50 kilometers
Trail

TARC Fells Trail Ultra

32M
December 02, 2017 Race day in 7 months
USA / New England / Massachusetts / Stoneham
Ultramarathon - 32 miles
Trail Tarc Trail Series

Jackson County 50-50 Ultramarathon

50k
December 02, 2017 Race day in 7 months
USA / East North Central / Indiana / Brownstown
Ultramarathon - 50 kilometers
Trail

Jackson County 50-50 Ultramarathon

50mi
December 02, 2017 Race day in 7 months
USA / East North Central / Indiana / Brownstown
Ultramarathon - 50 miles
Trail

Caloosahatchee Ultra

Caloosahatchee Ultra 50K
December 02, 2017 Race day in 7 months
USA / South Atlantic / Florida / Alva
Ultramarathon - 50 kilometers
Trail

TARC Fells Trail Ultra

40M
December 02, 2017 Race day in 7 months
USA / New England / Massachusetts / Stoneham
Ultramarathon - 40 miles
Trail Tarc Trail Series

Saint Sebastian 100

50 Miles
November 25, 2017 Race day in 7 months
USA / South Atlantic / Florida / Sebastian
Ultramarathon - 50 miles

Saint Sebastian 100

100 Miles
November 25, 2017 Race day in 7 months
USA / South Atlantic / Florida / Sebastian
Ultramarathon - 100 miles

Ghost of Seattle Marathon, Half Marathon & 50K

Ghost of Seattle 50K
November 25, 2017 Race day in 7 months
USA / Pacific / Washington / Seattle
Ultramarathon - 50 kilometers
Flat Road Running

Quad Dipsea

November 25, 2017 Race day in 7 months
USA / Pacific / California / Mill Valley
Ultramarathon - 28.400 miles
Hilly Trail