Ironman Switzerland

From the grounds of the renovated lido, athletes will swim 3.8km (2.4 miles) in the pristine waters of Lake Thun in which the monuments of the Alps are reflected. The single-loop counter-clockwise swim course will lead back into the marina next to the lido where the athletes will exit the lake and make their way into transition. The two-loop 180km (112-mile) bike course takes the athletes towards Spiez where they turn away from the lake towards the beautiful Gürbe Valley. The course will lead towards Berne Airport on the right side of the valley and back on the opposite side where they make a loop in the stunning Gantrisch area. From there it will be a smooth and slightly downhill ride back to the turnaround at transition zone for the second loop to complete the bike course. After the change from bike to run, athletes will begin their 42.2km (26.2-mile) run along the lakeshore into the old town passing the Schadau Castle and crossing the river Aare. On the other shore the course leads out of town on the trails of the Thun City Run. After the turn around, athletes will turn back into a town full of spectators and towards the event venue where they start their next loop.