TGV trains leave from Paris Montparnasse in the direction Brest or Rennes. To Laval it is about 80 minutes, then a 30 minute drive to La Rongere, or to Vitre with a journey time of 2 hours, then a 15 minute drive to La Rongere. Note: Laval is the larger town so there are more trains to and from there.
A local train from Paris is available to Laval, that takes about 3 hours.
The closest airports are Dinard (a 1 hour and 40 minutes drive to La Rongere) and Rennes (a 40 minute drive to La Rongere). Both airports have rental car facilities.
Brittany Ferries - www.brittany-ferries.com
From Portsmouth to Caen (2 hour drive from La Rongere) or St Malo (1 hour 30 minute drive from La Rongere). There are several sailings per day. There is also a fast service to Cherbourg, then a 3 hour drive to La Rongere.
P & O Ferries - www.poferries.com
From Portsmouthto Le Havre (3 hours drive from La Rongere).
La Rongere, La Croixille, Pays de la Loire, France, 53380