Thousand Islands Triathlon & Runs

AUG
1
2027
A multi-format triathlon and running event in Brockville featuring a 500 m tunnel on the run course, timed results, on-course nutrition, and prizes across several race distances.
Sun 1 Aug 2027
Sprint 200 m 20 2.5 km Sprint 750 m 20 5 km Sprint 5 20 2.5 km Olympic 1500 m 40 km Olympic 1500 m 40 10 km

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Thousand Islands Triathlon & Runs

Thousand Islands Triathlon & Runs takes place in Brockville and combines multi-discipline and running events on mapped courses. Race formats listed for the event include:

  • 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 200m, Bike 20km, Run 2.5km
  • 10K Run: Run 10km
  • 5K Run: Run 5km

The run course includes a 500 m section through the oldest railway tunnel, equipped with music, lights, and shade. The bike course is open to traffic; participants must follow the rules of the road and bike entries are restricted to ages 16 and older.

Registration perks and services described for entrants include professional timing, a personalised race bib, a swim cap, a free virtual bike fit, on-course nutrition, race photography available for download, post-race snacks, food and drinks from a local vendor, and podium prizes for the top three male, female, and non-binary finishers in each event.

Organizational notes include a shirt order deadline of June 25, an online registration cut-off of July 26 subject to availability, and a refund policy that requires cancellation insurance to request a refund. Visit the organization's website for the most recent information.

23 km
Try a Tri
10 km
10k Run
5 km
5k Run
Sprint Triathlon
Sprint Duathlon
Olympic Triathlon
Olympic Swim Cycle
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