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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
$93.96 - $120.94
Hope in Motion 2026
Caledon East, ON
Sun 07 Jun 26
$25.00 - $100.00
The Ribbon 200
Ravenna, ON
Wed 10 Jun 26
$181.97 - $1,745.06
NBMCA's Mattawa River Canoe Race
North Bay, ON
Sat 13 Jun 26
$50.81 - $118.78
Rainbow Trail Run 2026
Simcoe County, ON
Sat 13 Jun 26
$55.60 - $125.00
Community Strong Race Weekend
Sault Ste. Marie, ON
Sat 20 Jun 26
$18.44 - $93.96
EyeRide 2026
Vaughan, ON
Sat 20 Jun 26
$26.00 - $55.00
Waterloo 10 KM Classic 2026
Waterloo, ON
Sat 20 Jun 26
Free - $83.94
Niagara Ultra 2026
Niagara-on-the-Lake, ON
Sat 20 Jun 26
$30.36 - $194.00
THE LIMBERLOST CHALLENGE 2026
Huntsville, ON
Sat 04 Jul 26
Free - $127.51
THE LIMBERLOST CHALLENGE 2026
Huntsville, ON
Sat 04 Jul 26
Free - $127.51
BIG Gravel Grind presented by Subaru of Sarnia
Thedford, ON
Sun 05 Jul 26
$110.09 - $142.76
The First Blaze Trail Race 2026
Milton, ON
Sat 11 Jul 26
Free - $122.07
2026 Summit 700 Trail Runs
Grey County, ON
Sat 11 Jul 26
$28.49 - $380.46
The 2026 ENDURrun Prelim
Conestogo, ON
Mon 13 Jul 26
$40.37 - $247.33
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
2026 Lindsay Milk Run
Kawartha Lakes, ON
Sun 26 Jul 26
$23.83 - $50.81
Persistence Backyard Ultra
Arva, ON
Sat 01 Aug 26
Bluewater International Gran Fondo 2026
Sarnia, ON
Sun 02 Aug 26
$120.26 - $174.41
The 2026 ENDURrun Sport 80 KM
Conestogo, ON
Sun 09 Aug 26
$40.37 - $301.79
2026 Gran Fondo Lake Huron
Southampton, ON
Sat 15 Aug 26
$69.64 - $185.53
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
$89.39 - $111.18
Showing 1-24 of 24 results