See Trail Marathon Brienzersee

Bönigen, Switzerland • 3 May 2025

The See Trail Marathon Brienzersee is a unique trail running event set around the picturesque Brienzersee in Switzerland. Participants can choose between a full marathon (42.195 km) and a half marathon (21 km), with varying elevation gains that offer stunning views of the lake. The event emphasizes a back-to-basics approach, encouraging runners to estimate their finish times without the pressure of clocks. The marathon features a team relay option and promotes self-sufficiency with a focus on nature. The event fosters a community spirit, culminating in a gathering for results and shared experiences post-race. Visit the organization's website for the most recent information.

Race information

42 km
2-Er Team
42 km
1700 m+
Trail-Marathon
21 km
800 m+
Trail-Halbmarathon
Visit the organization's website for the most recent information.
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UTMB Index

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