Half Distance Triathlon 70.3 Tours Métropole - Loire Valley France Swim – Kick off your race with a 1.9 km (1.2 mile) swim in the River Cher, a beautiful tributary of the Loire River. The one-loop course takes place in calm waters, averaging 66°F (19°C), making it ideal for a smooth swim. Spectators lining the riverbanks will cheer you on, creating an exciting atmosphere. Bike – 90 km Ride through Loire Valley Castles The 90 km (56-mile) bike course is a flat, fast, and visually stunning ...