Extreme runner Mamo: world record attempt with a tree trunk on Lake Constance!

Extreme runner Mamo: world record attempt with a tree trunk on Lake Constance!

On Thursday morning, September 18, 2025, the extreme runner Mehmet “Mamo” Topyürek from Heilbronn started his daring world record attempt: circumnavigating Lake Constance on his own feet - with a tree trunk that weighs over 20 kilograms on his back. In his sporting mission, he plans to complete the approximately 260 kilometer long route with 1200 meters of altitude from Lindau to Konstanz. This record attempt not only promises top sporting achievements, but also entertainment and the common goal of collecting donations for sick children. Topyürek is accompanied by two witnesses who document the challenge All in reported.

Topyürek is a trained ultramarathon runner and has already caused quite a stir with his tree trunk runs. Since 2015 he has been pursuing the idea of ​​running with a tree trunk. In his first marathon, he managed to complete this distance in under six hours. Perhaps the extensive experience from previous competitions will help him, including an adventure where he ran over 300 kilometers from Heilbronn to Cologne in 2020 for the TV show “Ninja Warrior”. This enduring enthusiasm also seems to increase his motivation for the challenges ahead, like this South Courier explained.

The path to the record

Topyürek and his supporter Gerald Faust explored the route on their bikes in order to prepare optimally. The route to the Lake Constance cycle path is one of the most popular records, although crossing the lake from Bregenz to Bodman is also an enormous challenge at 64 kilometers. Sarah Thomas, an ultramarathon swimmer from the US, just set a new record at Lake Constance by swimming the distance in 19 hours and 51 minutes, highlighting her impressive open water swimming achievements, reports daily news.

Despite the physical and psychological pressure, Topyürek seems well prepared and is optimistic about his challenge. He expects the grueling journey to push him to his limits, but lovingly describes himself as “crazy” and someone who likes “nonsense.” After a short time he reached Bregenz in Vorarlberg and hopes to cover around 100 kilometers on the first day. He is supported by his loved ones, friends and the public, who follow his special project with excitement.

For Topyürek, this record attempt is not only a personal challenge, but also an opportunity to draw attention to the important support for sick children. His enthusiasm for running combined with the tree trunk and the associated charitable intention ensures a special event around Lake Constance. The incoming journey and the hardships associated with it represent not only a sporting achievement, but also an appeal to the community.