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Half Marathons Found In Ontario in October
View all ↓Half Marathons in Ontario in October 2025
findarace.com is Canada's favourite event discovery site. Check out our list of October 2025 Half Marathons in Ontario below.
Race Calendar: Half Marathons Found In October
Cooper Robertson Foundation – Run With Coops!
Grimsby, ON
03 Oct 25
Free - $20.00
Oakville 21.1
Oakville, ON
05 Oct 25
$69.90 - $143.19
2025 Muskoka Marathon
Bracebridge, ON
05 Oct 25
$22.94 - $141.36
2025 Women's Training Program
Toronto, ON
19 Oct 25
Free
Race Around the Place
Carleton Place, ON
25 Oct 25
$50.81 - $104.75
Cornwall Multisport Club - Fall Road Race 2025
Stormont, Dundas and Glengarry United Counties, ON
25 Oct 25
$2.00 - $25.00
U.S. & International Registrants, Niagara Falls 5k, 10k, Half & Marathon 2025
Niagara Falls, ON
26 Oct 25
$41.50 - $134.09
Niagara Falls 5k, 10k, Half & Marathon 2025
Niagara Falls, ON
26 Oct 25
$41.50 - $139.53
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