463 Buchau - Gramaialm - Gernalm
From the starting point, follow the cycle path alongside Lake Achensee to Pertisau. At the entrance to Pertisau, turn left and follow the road past the valley station of the Karwendel cable car and continue to the Karwendel valleys. Follow the signs to the Gramai Alm (serviced) via the Alpengasthof Falzturnalm (serviced). From there, the route leads back to the entrance of the Karwendel valleys. At the junction, follow the signs to the Alpengasthof Gern Alm via the Alpengasthof Pletzachalm (serviced). Take the same route back to Pertisau.