2017 - 2018 North America Race Calendar in May

Browse our Marathons, Half Marathons, Ultra marathons, Multiday events organized in North America during the month of May among 4023 races.

4,023 races

Borgess Run or the Health of it

May 04, 2018 Race day in 9 months
USA / East North Central / Michigan / Kalamazoo
Shorter than 10 km race

Be a Factor 5K presented by Inspector Cluseau's Home Inspection Service

May 05, 2018 Race day in 9 months
USA / East South Central / Tennessee / Loudon
5k race
Charity

Greenland Trail 50k

May 05, 2018 Race day in 9 months
USA / Mountain Region / Colorado / Larkspur
Half Marathon to Full Marathon
Trail

Greenland Trail 50k

May 05, 2018 Race day in 9 months
USA / Mountain Region / Colorado / Larkspur
Ultramarathon
Trail Fast

Greenland Trail 50k

May 05, 2018 Race day in 9 months
USA / Mountain Region / Colorado / Larkspur
10 km race to Half Marathon
Trail

Landen Bass Memorial 5K Trail Run

May 05, 2018 Race day in 9 months
USA / South Atlantic / North Carolina / Wilson
Shorter than 10 km race

Landen Bass Memorial 5K Trail Run

May 05, 2018 Race day in 9 months
USA / South Atlantic / North Carolina / Wilson
Shorter than 10 km race
Trail

MSW Superhero 5K Race & Family Fun Run

May 05, 2018 Race day in 9 months
USA / South Atlantic / Maryland / Westminster
5k race
Charity

Mary Daly Dash 5K and 1 Mile Family Fun Run

May 05, 2018 Race day in 9 months
USA / East North Central / Indiana / Elkhart
Shorter than 10 km race
Charity

Mary Daly Dash 5K and 1 Mile Family Fun Run

May 05, 2018 Race day in 9 months
USA / East North Central / Indiana / Elkhart
5k race
Charity

Mississauga Marathon

May 05, 2018 Race day in 9 months
Canada / Ontario / Mississauga
10k race
Road Running Walk

Mississauga Marathon

May 05, 2018 Race day in 9 months
Canada / Ontario / Mississauga
5k race
Road Running Walk