Full Distance Triathlon Lake Placid, set in the scenic Adirondack Mountains of New York, is one of the most iconic full-distance triathlons. Swim (2.4 miles): Athletes start with a swim in Mirror Lake, following a well-marked, two-loop course. The calm, clear water and optional wetsuits ensure a strong beginning. With an average water temperature of 72°F (22°C) in July, wetsuits are typically optional but widely used. Bike (112 miles): The bike leg is two loops through the hilly Adirondacks, ...