With the car
From Vienna/Salzburg:
Motorway A1 Salzburg – A10 Italien/Slowenien/Graz/Villach – exit Bischofshofen B311 – Zell am See B311
From Munich: toll-free
Munich A8 – freeway intersection Inntal A8 – Traunstein B 306 – exit Siegsdorf – Steinpaß B 312 – Unken – Zell am See B 311
With the train