September 1 @ 8:00 - 20:00
The River Surfing Association Thun is looking for the best surfer on the Müli “da Monsta” wave in Thun.
The RiverSurfJam Thun is a FUN and SHOW contest. Points for the SSA Landlocked Surf Team (LST) can not be collected. So everyone who would like to surf at the Müli and spend an action-packed day with like-minded people in the water can join in.