@Rob-Verhoeff said in Huge journey time difference:
@Tom-Loder There can indeed be differences in travel time. The route calculation is inherently different between Google and MRA (route engine). However, a one-hour difference does seem quite significant to me! Do you get these differences when you perform the route calculation, for example, using the TomTom map? Are you navigating based on a custom route with waypoints or an A-B route?
This was a custom route with 4 waypoints. There was a very small difference , less than 5km, in the measured difference of the two routes