a VirtualTourist member
How do you get to Mont Saint Michel from Clermont Ferrand by public transport?
I don't think it is possible to do this as a daytrip by public transport or by hiring a car.
Keolis Emeraude run buses to MSM from Rennes, Paris and Dol de Bretagne:
Train to Rennes will take you 6+ hours, to Paris 3+ hours.
www.voyages-sncf.com for train times, details and fares.
Driving time Clermont Ferrand>MSM is around 7 hours, according to www.viamichelin.com
You could take a train from Clermont Ferrand to Paris, Gare de Lyon, it takes about three and a half hours, then as Leics has suggested take the keolis bus to Mont St Michel.