Thousand Islands Triathlon & Runs

AUG
9
2026
Read all about the Thousand Islands Triathlon & Runs on 9 Aug 2026 in Brockville.
Sun 9 Aug 2026
40 kilometers 20 kilometers 10 kilometers 5 kilometers

Always double-check with the organizer's website! This page may contain affiliate links.

Thousand Islands Triathlon & Runs : Brockville, ON

The event takes place on 9 August 2026 at Centeen Park, Brockville (70 Water St E / 85 Water St E listed for pickup). Organizers list a run course that passes through an historic railway tunnel approximately 500 m long, featuring music, lights, and shade. The bike course is open to traffic; participants on the bike course must follow the rules of the road. Volunteers are from The Sobriety House; fundraising has raised $65 toward a $5,000 goal.

Important deadlines and policies: shirt orders must be placed by 29 June; finisher-medal orders by 11 July. Online registration (if not sold out) closes 6 August at 6 pm. Refunds are available only if cancellation insurance is purchased.

Race options, services, and logistics

Available events and distances include:

  • Olympic Triathlon - 1500 m swim · 40 km bike · 10 km run
  • Olympic Swim Cycle - 1500 m swim · 40 km bike
  • Sprint Triathlon - 750 m swim · 20 km bike · 5 km run
  • Sprint Duathlon - 5 km run · 20 km bike · 2.5 km run
  • Try a Tri (16+) - 200 m swim · 20 km bike · 2.5 km run
  • 10K Run - 10 km
  • 5K Run - 5 km

Registration includes a personalized bib, swim cap, professional timing, on-course nutrition, race photography, post-race snacks, and a free virtual bike fit. Podium prizes are awarded to the top three male, female, and non-binary finishers in each event. Bib pickup is at Centeen Park the day before and the morning of the event; an in-person orientation is scheduled the day before. Course maps and Strava route files are available. Visit the organization's website for the most recent information.

40 km
Olympic Triathlon (1500 M Swim, 40 Km Bike, 10 Km Run)
20 km
Sprint Triathlon (750 M Swim, 20 Km Bike, 5 Km Run)
10 km
10k Run
5 km
Sprint Duathlon (5 Km Run, 20 Km Bike, 2.5 Km Run)
5 km
5k Run
Olympic Swim Cycle (1500 M Swim, 40 Km Bike)
Try a Tri (16+)

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