From Bern via Gürbetal-Wattenwil or via the Bern/Interlaken motorway, take the Thun Nord exit. The Grizzlybär is only a 15-minute drive from Thun. There are plenty of free parking spaces available - also for buses and coaches. Plan your journey directly with the Google route planner.
By train to Thun, at Thun station bus connection in the direction of Wattenwil. The bus stop called Längenbühl, Grizzlybär is right next to the Grizzlybär Adventure Land. Timetable at www.sbb.ch.