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Ultra Marathons Found In Ontario in Summer
View all ↓Ultra Marathons in Ontario in Summer 2026
findarace.com is Canada's favourite event discovery site. Check out our list of Summer 2026 Ultra Marathons in Ontario below.
Race Calendar: Ultra Marathons Found In Summer
THE LIMBERLOST CHALLENGE 2026
Huntsville, ON
Sat 04 Jul 26
Free - $127.51
THE LIMBERLOST CHALLENGE 2026
Huntsville, ON
Sat 04 Jul 26
Free - $149.29
BIG Gravel Grind presented by Subaru of Sarnia
Thedford, ON
Sun 05 Jul 26
$142.76 - $175.44
The First Blaze Trail Race 2026
Milton, ON
Sat 11 Jul 26
2026 Summit 700 Trail Runs
Grey County, ON
Sat 11 Jul 26
$28.49 - $434.61
E•60, from The ENDURrun
Conestogo, ON
Mon 13 Jul 26
$45.82 - $274.57
Tally in the Valley Trail Race 2026
Hamilton, ON
Sat 25 Jul 26
Tally in the Valley Trail Race 2026
Hamilton, ON
Sat 25 Jul 26
2026 Lindsay Milk Run
Kawartha Lakes, ON
Sun 26 Jul 26
$23.83 - $66.98
Persistence Backyard Ultra
Arva, ON
Sat 01 Aug 26
Bluewater International Gran Fondo 2026
Sarnia, ON
Sun 02 Aug 26
$93.18 - $217.73
The 2026 ENDURrun Sport 80 KM
Conestogo, ON
Sun 09 Aug 26
$45.82 - $329.03
Middle Path Trail Race
Peterborough County, ON
Sat 15 Aug 26
$23.83 - $110.15
2026 Gran Fondo Lake Huron
Southampton, ON
Sat 15 Aug 26
$69.64 - $185.53
Kawartha Lakes Classic Cycling Tour
Kawartha Lakes, ON
Sat 29 Aug 26
$95.00
Welland Canal Open Water Swim
Welland, ON
Sun 30 Aug 26
$94.83 - $122.07
Showing 1-16 of 16 results