On Oct. 26 we are arriving by train in Pontorson, planning to go on to MSM for the night. The next day we plan to take a bus back to Pontorson for a train to Paris (via Rennes). We already have train reservations. From what I read, there is frequent bus service between Pontorson and MSM, but now I can't seem to find any indication of it. Postings I've found have been a year old. Does anyone have current info on this bus service?
Here's the schedule: http://tinyurl.com/d5ha8fl Note that the bus ride from the train station (Gare SNCF) to the Mont is only 13 minutes.
On your return to Paris you don't need to go via Pontorson. You can take a bus operated by SNCF (French National Rail) from Mont-St-Michel to Rennes and a train from Rennes to Paris. See the detailed timetables on the German Rail site.
The Nouvel Accueil website is exactly the one I was looking for. Thanks a lot for the info.