We have our train tickets and now are working on the bus portion of the trip. I need your advice on which web site has the schedule and rates. As always, thank you for your advice.
Here you go: clickThese are the schedules, not very frequent bus service, the bus ride is only 1.5 hrs but it appears there are only a few per day. I've driven it, never gone by bus. If you can get the 0950 bus, that would be good. This site has the best schedules but you can't buy tickets on it, you buy those at an SNCF train station in France. Input Rennes and Mont St Michel.
Maryann, That bus is operated by SNCF so you can buy your ticket at any mainline train station in France. The fare is 10.30€.