9 July 2023
Around 2000 international athletes are expected to travel to Thun for the world-famous long-distance triathlon. They'll begin by swimming 3.8 kilometres in Lake Thun. After that, they'll cycle 180 kilometres on racing bikes, on two loops around the local area. Finally, these tough elite athletes will run a marathon of 42.195 kilometres in three circuits through Thun. It's expected that about 50,000 sports fans will come to support the men and women in their incredible achievement.