Coming from Salzburg ...
Tauernautobahn - Bischofshofen - Zell am See - Saalfelden - Lenzing

Coming from Lofer …
Lofer - Saalfelden - Lenzing

Or, toll-free …
Siegsdorf - Lofer - Saalfelden - Lenzing

Please use the Google map route planner directly. You can find it by following this Link