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View all ↓Triathlon in Ontario 2026 - 2027
The most comprehensive list of Ontario Triathlon Events in 2026 - 2027. Discover 100's of US Ontario Triathlon. Find your perfect race here!
Triathlon Ontario 2026 - 2027
2026 Cornwall Youth Triathlon
Cornwall, ON
Sat 22 Aug 26
Sioux Narrows Global Aquabike and Open Water Swim Festival
Kenora District, ON
Sat 22 Aug 26
$78.50 - $274.57
2026 Cornwall Triathlon - Adult Day
Cornwall, ON
Sun 23 Aug 26
Wasaga Beach - Sat Aug 29
Wasaga Beach, ON
Sat 29 Aug 26
Free - $209.99
Subaru Triathlon Series - Guelph Lake 2
Guelph, ON
Sat 05 Sep 26
Free - $198.32
Lakeside - Sat Sept 12 and Sun Sept 13
Lakeside, ON
Sat 12 Sep 26
Free - $211.07
Barrelman Niagara Falls
Welland, ON
Sun 20 Sep 26
$209.21 - $459.73
2026 Triathlon Series Volunteer Portal
Barrie, ON
Sun 20 Sep 26
$7.00 - $28.00
Showing 1-8 of 8 results