6 hours from Paris, 2½ hours from Nantes or from Rennes, 1 hour from Brest, 30 minutes from Quimper.
There is a motorway link from Paris/Rennes (the A11/E50) and a toll-free express link from Rennes or Nantes.
To check journey times or to get detailed driving directions, try the websites
www.viamichelin.fr ou
www.mappy.fr