2016 - 2017 USA Ultramarathon Calendar in May

Browse our Ultramarathon Calendar for races organized in USA during the month of May among 126 races.

126 races

PEAK Ultra Marathon

30 Miles
May 04, 2017 Race day in 8 months
USA / New England / Vermont / Pittsfield
Ultramarathon - 30 miles
Trail

Wild Wild West Marathon

50K Ultra
May 06, 2017 Race day in 8 months
USA / Pacific / California / Lone Pine
Ultramarathon - 50 kilometers
Trail Mountain

Greenland Trail 50k

Greenland Trail 50k
May 06, 2017 Race day in 8 months
USA / Mountain Region / Colorado / Larkspur
Ultramarathon - 50 kilometers
Trail Fast

Horseshoe Lake Trail Run

Horseshoe Lake 50K
May 06, 2017 Race day in 8 months
USA / Pacific / California / Palo Alto
Ultramarathon - 50 kilometers
Coastal Trail Runs Hilly Walk Trail

5K for FA

Kids Fun Run
May 06, 2017 Race day in 8 months
USA / Mid-Atlantic / New York / Hilton
Ultramarathon - 1000 kilometers

Miwok 100K Trail Race

May 06, 2017 Race day in 8 months
USA / Pacific / California / Rodeo Lagoon
Ultramarathon - 100 kilometers
UTMB Qualifier Trail Western States Qualifier

PEAK Ultra Marathon

200 Miles
May 11, 2017 Race day in 9 months
USA / New England / Vermont / Pittsfield
Ultramarathon - 200 miles
Trail

PEAK Ultra Marathon

100 Miles
May 13, 2017 Race day in 9 months
USA / New England / Vermont / Pittsfield
Ultramarathon - 100 miles
Trail

Cinderella Trail Run (May)

50 km
May 13, 2017 Race day in 9 months
USA / Pacific / California / Joaquin Miller Park, Oakland
Ultramarathon - 50 kilometers
Coastal Trail Runs Trail

Paiute Meadows Trail 50K

50K Ultra
May 13, 2017 Race day in 9 months
USA / Pacific / California / Susanville
Ultramarathon - 50 kilometers
Trail

PEAK Ultra Marathon

50 miles
May 13, 2017 Race day in 9 months
USA / New England / Vermont / Pittsfield
Ultramarathon - 50 miles
Trail

Ice Age Trail 50

Ice Age Trail 50K
May 13, 2017 Race day in 9 months
USA / East North Central / Wisconsin / La grange
Ultramarathon - 50 kilometers
Trail

Ice Age Trail 50

Ice Age Trail 50M
May 13, 2017 Race day in 9 months
USA / East North Central / Wisconsin / La grange
Ultramarathon - 50 miles
UTMB Qualifier Trail

PCT50 Trail Run

May 13, 2017 Race day in 9 months
USA / Pacific / California / Cleveland National Forest
Ultramarathon - 50 miles
Trail

3 Days at the Fair

50K
May 15, 2017 Race day in 9 months
USA / Mid-Atlantic / New Jersey / Sussex County Fairgrounds
Ultramarathon - 50 kilometers
NJ Trail Series