Trijų užtvankų maratonas

This running and mountain biking event is held yearly on the third Saturday in September in the German part of the Erzgebirge (Ore Mountains), a mountain range that is shared by two countries: Germany and the Czech Republic.

It offers three challenging multi-terrain races for runners ...

8km (8.345km)
Halbmarathon (21km)
Marathon (42.195km)
... and three for cyclists ...

30km (31.6km)
50km (50.82km)
100km (96.5km)
The start and the finish are on the Sportplatz (athletics track) in the small town of Eibenstock which is situated at an elevation of about 650 metres, approximately 33 kilometres from the city of Zwickau and 11 kilometres from the border with Czechia.

The marathon visits three reservoirs and takes the runners across drei Talsperren (three dams): Eibenstock, Carlsfeld and Sosa.