2018 - 2019 Ontario Race Calendar in May

Browse our Marathons, Half Marathons, Ultra marathons, Multiday events organized in Ontario during the month of May among 62 races.

62 races

Shoppers Drug Mart Run For Women Waterloo

5 km
2019-05-05
North America / Canada / Ontario / Waterloo
5k race
Road Running Solo Women only

Shoppers Drug Mart Run For Women Waterloo

10 km
2019-05-05
North America / Canada / Ontario / Waterloo
10k race
Road Running Solo Women only

Fire Fighters Ten Mile Road Race

2017-05-22
North America / Canada / Ontario / Thunder Bay
10 km race to Half Marathon
Road Running Solo

Sulphur Springs Trail Race

200 Mile
2017-05-25 - 12:00
North America / Canada / Ontario / Ancaster
Ultramarathon
Trail Running

Seven Bridges Run, 10k and 5k run

5K
2017-05-27 - 10:15
North America / Canada / Ontario / Orangeville
5k race
Running

Seven Bridges Run, 10k and 5k run

10K
2017-05-27 - 10:00
North America / Canada / Ontario / Orangeville
10k race
Running

Sulphur Springs Trail Race

10K
2017-05-27 - 08:15
North America / Canada / Ontario / Ancaster
10k race
Trail Running

Sulphur Springs Trail Race

50 Mile
2017-05-27 - 06:00
North America / Canada / Ontario / Ancaster
Ultramarathon
Trail Running

Sulphur Springs Trail Race

25K
2017-05-27 - 07:30
North America / Canada / Ontario / Ancaster
Half Marathon to Full Marathon
Trail Running

Sulphur Springs Trail Race

100 Mile
2017-05-27 - 06:00
North America / Canada / Ontario / Ancaster
Ultramarathon
Trail Running

Sulphur Springs Trail Race

50K
2017-05-27 - 07:30
North America / Canada / Ontario / Ancaster
Ultramarathon
Trail Running

Dairy Capital Run

10k
2017-05-28 - 08:00
North America / Canada / Ontario / Woodstock
10k race
Running
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