IRONMAN Switzerland Thun

Pristine waters and majestic mountains

The majestic Alps – reflected in the pristine waters of Lake Thun – welcomes athletes to Thun, the new home of IRONMAN Switzerland. This race took place in Zurich for 23 years before moving to its new home, a celebration of the Swiss mountain culture and landscape. Spot the three famous peaks Eiger, Mönch & Jungfrau right from the event site and marvel at the beauty of this otherworldly landscape.

Swim
The one-loop 3.8 km (2.4 mile) swim starts at the renovated lido where athletes enter the pristine water of Lake Thun in the heart of the Alps. From there you’ll swim towards the marina next to the lido and make your way into transition.

Bike
The two-loop 180.2 km (112 mile) bike course takes athletes towards Spiez where they turn away from the lake and into Gürbe valley. The course continues towards Berne Airport and the Gantrisch area. A smooth downhill gets you back to transition.

Run
The three-loop 42.2 km (26.2 mile) run course takes athletes along the lake bank to the event area and the “Schadaupark”. You’ll cross the historical “Scherzligschleuse” bridge before the turnaround – all to the backdrop of the majestic Alps!

Swim: LAKE
Bike: HILLY
Run: FLAT

Avg Air Temp: 68° F / 20° C
Avg Water Temp: 66° F / 19° C

Airport: ZRH