From the Ulm direction:
B 311 federal highway in the direction of Tuttlingen/Freiburg to Mengen.
From the Stuttgart direction:
B 27 federal highway to Reutlingen, followed by B 32 via Sigmaringen to Mengen.
From the Munich direction:
A 96 federal motorway to Memmingen, followed by A 7 to the Berkheim exit, B 312 to Biberach, then via Bad Saulgau to Mengen.