Thousand Islands Triathlon

Race is sold out! The Brockville Railway Tunnel will be closed to the public for the race on Sunday, August 11 until 1pm. 

Triathlon, Duathlon, and Running Events.

Run through a piece of Canadian history – the oldest railway tunnel as part of your 1000 Islands run course. We can’t overstate it – it’s 500 meters long with music, lights, and shade, and it is the best course feature we’ve ever seen!