By car, from Hamburg/Luebeck:
On the A1 E22 in the direction of Lübeck, change to the A20 in the direction of Wismar/Rostock. Then take the exit for Kühlungsborn.

By car, from Berlin:
Take the Kreuz Rostock exit off the A19 to get on the A20 in the direction of Wismar/Lübeck/Hamburg. Then take the exit for Kühlungsborn.