2018 - 2019 Ultramarathon Calendar in May

Browse our Ultramarathon Calendar for races organized around the world during the month of May among 377 races.

377 races

Salt Flats 100 Mile Endurance Run

Salt Flats 50 Miles
2019-05-03
North America / USA / Mountain Region / Utah / Wendover
Ultramarathon
Desert Trail Running Solo

Salt Flats 100 Mile Endurance Run

Salt Flats 50K
2019-05-03
North America / USA / Mountain Region / Utah / Wendover
Ultramarathon
Desert Trail Running Solo

Salt Flats 100 Mile Endurance Run

Salt Flats 100
2019-05-03 - 07:00
North America / USA / Mountain Region / Utah / Wendover
Ultramarathon
Desert Trail Running Solo

Golden Gate Relay

125 miles
2019-05-04 - 07:00
North America / USA / Pacific / California / Calistoga
Ultramarathon
Road Running Relay

Golden Gate Relay

190 miles
2019-05-04 - 07:00
North America / USA / Pacific / California / Calistoga
Ultramarathon
Road Running Relay

Golden Gate Relay

160 miles
2019-05-04 - 07:00
North America / USA / Pacific / California / Calistoga
Ultramarathon
Road Running Relay

Grayson Highlands 50K and Half Marathon

50K
2019-05-04 - 08:00
North America / USA / South Atlantic / Virginia / Mouth of Wilson
Ultramarathon
Trail Running Solo

Greenland Trail 50k

50K Trail Race
2019-05-04 - 07:00
North America / USA / Mountain Region / Colorado / Larkspur
Ultramarathon
Trail Running Solo

Hachie 50 Marathon, Ultra and Relay

50 Mile Ultra Relay
2019-05-04 - 05:00
North America / USA / West South Central / Texas / Waxahachie
Ultramarathon
Road Running Relay

Hachie 50 Marathon, Ultra and Relay

50k Ultra-marathon
2019-05-04 - 06:00
North America / USA / West South Central / Texas / Waxahachie
Ultramarathon
Road Running Solo

Hachie 50 Marathon, Ultra and Relay

50 Mile Ultra-marathon
2019-05-04 - 05:00
North America / USA / West South Central / Texas / Waxahachie
Ultramarathon
Road Running Solo

Innsbruck Alpine Trilrun Festival

K85-SCOTT Heart of the Alps Ultra
2019-05-04 - 04:00
Europe / Western Europe / Austria / Innsbruck
Ultramarathon
Mountain Trail Running Mountain Solo
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