Full Distance Triathlon Canada-Ottawa: Ultimate Race Experience Kick off your triathlon journey with a 2-loop, 3.8 km (2.4-mile) swim in the refreshing Ottawa River at Britannia Park. With an average water temperature of 70°F (21°C), this swim offers ideal race conditions and ample viewing space for spectators, creating an energizing start to the race. Transition to the bike and ride through Ottawa’s scenic 180 km (112-mile), 2.75-loop course, closed entirely to traffic. Athletes will pass ...