Stage 8 of the 2025 Tour de Suisse was a mountain stage that took place on .

The stage started in Beckenried and finished in Stockhütte, starting at with an expected finish at (average speed of 20 km/h).

The total distance of the stage was 10.1 km. The stage included 0 categorized climb(s) and 1 checkpoint(s), and had a total elevation gain of 840 m, and a total descent of -17 m.