Thousand Islands Triathlon & Runs
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Event details
The Thousand Islands Triathlon & Runs is scheduled for Sunday, August 9, 2026, at Centeen Park in Brockville. The run course includes a historic railway tunnel that is 500 meters long and features music, lights, and shade. The bike course is open to traffic; participants must follow the rules of the road and be at least 16 years old. Professional timing, on-course nutrition, race photography, a personalized race bib, a swim cap, and post-race snacks are included with registration. Podium prizes are awarded to the top three male, female, and non-binary finishers in each event. Refunds are available only if cancellation insurance is purchased.
Race options and logistics
- Olympic Triathlon: Swim 1500m, Bike 40km, Run 10km
- Olympic Swim Cycle: Swim 1500m, Bike 40km
- Sprint Triathlon: Swim 750m, Bike 20km, Run 5km
- Sprint Duathlon: Run 5km, Bike 20km, Run 2.5km
- Try a Tri (16+): Swim 750m, Bike 20km, Run 5km
- 10K Run: Run 10km
- 5K Run: Run 5km
Important deadlines include a shirt order cutoff on June 29 and a medal add-on deadline on July 11. Online registration (subject to sell-out) closes August 6 at 6 pm for inclusion on the Athlete Wall. Bib pickup is scheduled the day before the event at Centeen Park (in-person orientations at two times) and on race morning at the same location. Strava files are provided for swim, bike, and run courses. Visit the organization's website for the most recent information.