After two hours of jogging, Beat Knechtle is only slowly warming up.
The endurance athlete and doctor from Eastern Switzerland takes part in the toughest long-distance competitions in the world on foot, by bike and by swimming and is the first person in the world to have completed more than 300 Ironman distances in competition.
In the Appenzellerbahn, the 59-year-old explains how such achievements are even possible.
The interview can be found at the following link: https://www.tvo-online.ch/im-zug-mit/beat-knechtle-156049541