The invention provides a method of routing using an offboard navigation system for motor vehicles, in which road points, at which there is a road junction, and also the road distance between adjacent road points on a calculated route are stored in a memory element in the vehicle. Preferably, only those road points which are also turnoff points are stored. The distance from the next turnoff point at which a turnoff maneuver is to be effected is determined by comparing the distance covered since the last turnoff point with a stored value for the road distance between the adjacent turnoff points. If a minimum value for the distance from the next turnoff point has not been reached, a driving instruction is output. The method requires only a small volume of data and an odometer for position finding.