Brest and Rennes are 593 km and 348 from Paris by car, respectively.
Flights from either Charles de Gaulle or ORLY airports to both Brest and Rennes are about 1 hour 15 minutes.
Brest Airport(French only) offers flights to and from other French cities.
Quimper, Lorient, and Lannion are also each served by their own airports:
Quimper Airport offers regular flights to Paris, and connections to 20 other French destinations via Paris.
Lorient Airport features daily direct flights to Paris and Lyon, and connecting flights to more than 40 destinations in and around Europe.
Lannion Airport(French only) Flights available to about 20 French destinations, as well as French Guyana, the Antilles, and La Réunion. Flights are also available to London, Madrid, and several other international destinations.
The high-speed TGV traintakes about 4 hours from Paris to Brest or Quimper, or about 2 hours to Rennes. The TGV also links Rennes to Lille (3.5 hours) and Lyon (4.5 hours).