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.

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

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