Cornwall Triathlon – Official website for the Cornwall Triathlon, based in Cornwall Ontario. A premier triathlon serving Ottawa, Montreal, Eastern Ontario, Western Quebec, and Northern New York State.

Registration Opening January 1, 2025

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2025 Event Dates

Youth: Saturday, August 23

Adults: Sunday, August 24

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2025 Event Dates

Youth: Saturday, August 23

Adults: Sunday, August 24

Slide Background

2025 Event Dates

Youth: Saturday, August 23

Adults: Sunday, August 24

Slide Background

2025 Event Dates

Youth: Saturday, August 23

Adults: Sunday, August 24

Slide Background

2025 Event Dates

Youth: Saturday, August 23

Adults: Sunday, August 24

Slide Background

2025 Event Dates

Youth: Saturday, August 23

Adults: Sunday, August 24

Slide Background

2025 Event Dates

Youth: Saturday, August 23

Adults: Sunday, August 24