Based out of Guelph Lake Conservation Area, the Subaru Guelph Lake One Triathlon weekend is one of Ontario’s most popular and longest-running races. There are a wide variety of races and distances to choose from for athletes of all abilities and levels of experience: Try-a-Tri, sprint and standard distance triathlons and duathlons.

Eligible Events – Points will be accumulated by club members (must also be Triathlon Ontario members) in the Sprint and Standard triathlon, duathlon, aquabike and relay event.

2026 World Qualifier – Sprint Triathlon and Sprint Duathlon, with one spot per gender, per age group available on the day.

Saturday June 14, 2025

Olympic Triathlon – Olympic Duathlon – Olympic Swim/Bike – Olympic Relay
Try-A-Tri

Sunday, June 15, 2025

Sprint Triathlon – Sprint Duathlon – Sprint Swim/Bike – Sprint Relay

Provincial Club Championship