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Ultra Marathons Found In Ontario in August
View all ↓Ultra Marathons in Ontario in August 2025
findarace.com is Canada's favourite event discovery site. Check out our list of August 2025 Ultra Marathons in Ontario below.
Race Calendar: Ultra Marathons Found In August
Middle Path Trail Race
Peterborough County, ON
09 Aug 25
$34.62 - $131.73
Couch To a Voyageur
North Bay, ON
10 Aug 25
$74.58
2025 Gran Fondo Lake Huron
Southampton, ON
16 Aug 25
$28.49 - $180.11
Mudskipper Canadian Individual SwimRun Championships and Parry Sound 15K Ultra Swim
Parry Sound, ON
17 Aug 25
$2.50 - $231.00
Share the Road Gran Fondo
Milton, ON
17 Aug 25
$56.20 - $245.02
Share the Road Gran Fondo 2025
Milton, ON
17 Aug 25
$56.71 - $247.33
The Runway 2025
Breslau, ON
30 Aug 25
Free - $51.26
Showing 1-7 of 7 results