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View all ↓Triathlon in Ontario 2025 - 2026
The most comprehensive list of Ontario Triathlon Events in 2025 - 2026. Discover 100's of US Ontario Triathlon. Find your perfect race here!
Triathlon Ontario 2025 - 2026
Barrie - Sat Aug 9 and Sun Aug 10
Barrie, ON
09 Aug 25
Free - $165.85
Subaru Triathlon Series - Niagara
Grimsby, ON
09 Aug 25
Free - $187.42
Beaton Classic 2025
Greater Sudbury, ON
10 Aug 25
$18.44 - $164.10
Toronto Island - Sat Aug 16 and Sun Aug 17
Toronto, ON
16 Aug 25
Free - $165.85
TRi KiDS Triathlon Series NIAGARA (PORT COLBORNE), ON
Port Colborne, ON
17 Aug 25
2025 Petawawa Triathlon
Petawawa, ON
17 Aug 25
$78.50 - $198.32
Wasaga Beach - Sat Aug 23
Wasaga Beach, ON
23 Aug 25
Free - $176.62
2025 Cornwall Youth Triathlon
Cornwall, ON
23 Aug 25
$45.00 - $60.00
Apex ONEWAY
Greater Sudbury, ON
24 Aug 25
$24.03 - $78.50
2025 Cornwall Triathlon - Adult Day
Cornwall, ON
24 Aug 25
$40.00 - $600.00
Subaru Women's Triathlon Festival
Grimsby, ON
24 Aug 25
Free - $176.53
Subaru Triathlon Series - Guelph Lake 2
Guelph, ON
30 Aug 25
Free - $187.42
TRi KiDS Triathlon Series MILTON, ON
Milton, ON
31 Aug 25
Lakeside - Sat Sept 6 and Sun Sept 7
Lakeside, ON
06 Sep 25
Free - $183.08
Cornwall Multisport Club - Fall Duathlon 2025
Long Sault, ON
13 Sep 25
Free
Barrelman Niagara Falls
Welland, ON
14 Sep 25
$198.32 - $514.19
Showing 1-16 of 16 results