A scooter is described with a chassis which has a guide bearing for a steering column holding the front wheel and a supporting arm, which has a seat, for a pivotable footboard which is provided with a rear wheel. In order to achieve simple readjustment to a training bike, it is proposed that the supporting arm which is connected to the footboard is coupled to the guide bearing so as to be pivotable about an axis running through the center point of the rear wheel.