Ontario
Triathlon Calendar Ontario 2026-2027
Monthly updates for Ontario
Get new running races (and updates) in your inbox every month.
Explore the best triathlons in Ontario for 2026-2027! Our updated list features 26 exciting races across the region. Find your next race in Ontario below and join the running community at these great events!
August 2027
Triathlon and duathlon at Wasaga Beach on Saturday August 28th with sprint and Olympic distances, beach swims in Georgian Bay, flat shared-road bike routes and shore-side runs.
September 2027
A season-closing multisport event in Ottawa with swim, bike and run courses along the Rideau Canal and a finish on Terry Fox Track.
Multi-discipline event at Woodlands Beach with shallow waters, island bike routes and a riverside run along the St. Lawrence.
Weekend multisport at Lakeside Resort on Lake Sunova with swim, bike and run races ranging from kids formats to Olympic distance.
A multi-sport adventure race near Parry Sound ON for teams of two, with a points-based course, a mandatory prologue and a six hour time limit to visit up to 28 checkpoints.
Monthly updates for Ontario
Get new running races (and updates) in your inbox every month.
Triathlon with swim, bike and run from the Welland International Flatwater Centre to a finish in Niagara Falls on September 19, 2027.