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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
Haliburton Forest Trail Race 2025
Haliburton, ON
06 Sep 25
Free - $223.43
Grey Highlands Gran Fondo
Markdale, ON
06 Sep 25
$75.89 - $139.72
Welland Canal Open Water Swim
Welland, ON
07 Sep 25
$99.36 - $120.94
Monster of Mazinaw Trail Race 2025
Cloyne, ON
20 Sep 25
$78.50 - $100.28
The Wolfpack Ultra Championship
Hamilton, ON
20 Sep 25
$56.20 - $115.54
Rotary Tour de Dundas Gran Fondo 2025
Dundas, ON
21 Sep 25
$29.23 - $131.73
Showing 1-6 of 6 results