Sep 16, 2017 - 2:12 PM
Note that there's only one pass on your way to Interlaken: the Simplon pass. The Lötschberg car train will take you across the next mountain range between Goppenstein and Kandersteg. There's no road there. Theoretically you can take the much longer route via the Grimsel pass, but that pass is much higher.
The Simplon pass is relatively low. I agree with Lucas it's probably not a problem. But do take a good look at the weather conditions. Some of the higher passes like Nufenen and Flüela are snow covered today, for example. You should definitely avoid that with a motorhome. You'll find a map with all pass and road conditions here.
Last modified on Sep 19, 2017 - 7:03 AM by Arno