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Ultra Marathons Found In Ontario in September
View all ↓Ultra Marathons in Ontario in September 2025
findarace.com is Canada's favourite event discovery site. Check out our list of September 2025 Ultra Marathons in Ontario below.
Race Calendar: Ultra Marathons Found In September
Monarch Ultra 10km
Peterborough, ON
20 Sep 25
$23.83 - $83.17
The Wolfpack Trail Event
Hamilton, ON
20 Sep 25
$56.20 - $115.54
Monster of Mazinaw Trail Race 2025
Cloyne, ON
20 Sep 25
Rotary Tour de Dundas Gran Fondo 2025
Dundas, ON
21 Sep 25
Free - $131.73
100KM MOVE
Oakville, ON
26 Sep 25
$75.00
Essex Region Conservation Bike Tour 2025
Kingsville, ON
27 Sep 25
$13.04 - $104.75
Run Off-the-Grid
Mattawan, ON
27 Sep 25
Free - $481.52
Tour d'Aldershot 2025
Burlington, ON
27 Sep 25
$10.00 - $57.90
2025 Great Lakes to Greenbelt Farm Fresh Rides – featuring one day of cycling and one day paddling
Hamilton, ON
27 Sep 25
$47.49 - $109.86
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