A mounting system for a binding or a binding component on a cross-country ski includes a mounting plate that is arranged on the top surface of the cross-country ski. The mounting plate comprises longitudinal side edges having a profile with undercuts for longitudinal positioning and attachment of the binding or binding component with the aid of a complementary profile on the binding or binding component. The mounting plate comprises a longitudinal channel that houses a longitudinal rail. The upper side of the longitudinal rail comprises at least one locking device. The underside of the binding or binding component comprises at least one complementary locking device.