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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
2026 Forest City Cycling Challenge
London, ON
Sun 07 Jun 26
$83.17 - $110.15
The Ribbon 200
Ravenna, ON
Wed 10 Jun 26
$165.64 - $1,527.20
EyeRide 2026
Vaughan, ON
Sat 20 Jun 26
$55.00
Niagara Ultra 2026
Niagara-on-the-Lake, ON
Sat 20 Jun 26
$30.36 - $177.66
Waterloo 10 KM Classic 2026
Waterloo, ON
Sat 20 Jun 26
Free - $73.05
THE LIMBERLOST CHALLENGE 2026
Huntsville, ON
Sat 04 Jul 26
Free - $111.18
THE LIMBERLOST CHALLENGE 2026
Huntsville, ON
Sat 04 Jul 26
Free - $111.18
BIG Gravel Grind presented by Subaru of Sarnia
Thedford, ON
Sun 05 Jul 26
$99.19 - $131.87
2026 Summit 700 Trail Runs
Grey County, ON
Sat 11 Jul 26
$28.49 - $353.39
The First Blaze Trail Race 2026
Milton, ON
Sat 11 Jul 26
Free - $122.07
The 2026 ENDURrun Prelim
Conestogo, ON
Mon 13 Jul 26
$34.93 - $220.10
Tally in the Valley Trail Race 2026
Hamilton, ON
Sat 25 Jul 26
Free - $220.10
Tally in the Valley Trail Race 2026
Hamilton, ON
Sat 25 Jul 26
Persistence Backyard Ultra
Arva, ON
Sat 01 Aug 26
Bluewater International Gran Fondo 2026
Sarnia, ON
Sun 02 Aug 26
$109.44 - $163.58
The 2026 ENDURrun Sport 80 KM
Conestogo, ON
Sun 09 Aug 26
$34.93 - $274.57
Middle Path Trail Race
Peterborough County, ON
Sat 15 Aug 26
$23.83 - $110.15
Welland Canal Open Water Swim
Welland, ON
Sun 30 Aug 26
$83.94 - $105.72
Showing 1-18 of 18 results