A backpack support system has a frame, which is equipped with shoulder straps and preferably also a waist belt and which preferably inherently rigid so hat the loads that occur during use, the frame only flexes by inevitable amounts in the millimeter range by which any rigid body flexes when subjected to a load. A bike mount is fastened to the frame. The bike mount is embodied so that the bike, almost exclusively by its frame or frame components such as the rear fork can be fastened directly to the frame, i.e. without luggage or a pack compartment being situated between the bike and the frame in the points at which the bike rests directly against the frame. When properly fastened, the bike is thus affixed to the frame so that it cannot move.