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Ultra Marathons Found In Ontario in Spring
View all ↓Ultra Marathons in Ontario in Spring 2025
findarace.com is Canada's favourite event discovery site. Check out our list of Spring 2025 Ultra Marathons in Ontario below.
Race Calendar: Ultra Marathons Found In Spring
The Caledon Crusher
Shelburne, ON
12 Apr 25
endurrace 2025
Waterloo, ON
12 Apr 25
$12.24 - $71.80
The Foxtail Rail Trail Race (Paul Turkstra Memorial) 2025
Dundas, ON
19 Apr 25
$62.15 - $111.18
Pick Your Poison Trail Run 2025
Barrie, ON
26 Apr 25
Bumrun Toronto 2025
Toronto, ON
27 Apr 25
$13.04 - $61.59
The Rugged Raccoon Night Race 2025
St. Marys, ON
03 May 25
$78.50 - $111.18
Conquer The Canuck
Cambridge, ON
10 May 25
$93.96 - $325.94
Big D's Backyard Ultra and Trail Race
Kawartha Lakes, ON
17 May 25
$88.57 - $164.10
Sulphur Springs Trail Race 2025
Hamilton, ON
24 May 25
$85.87 - $615.46
Spin the Lakes
Huntsville, ON
24 May 25
$110.15
Baden Running Races 2025
Baden, ON
25 May 25
$13.14 - $55.62
Showing 1-11 of 11 results