Looking for information on train (or other modes) travel from southern France to Burgos, Spain. We are renting a car in Paris (after completing a Rick Steves tour) and driving to southern France, then travelling into Spain, to start a tour in Burgos. Based on the map of France, it seems that the two French cities mentioned in the subject would be the logical places to drop the car. The train seems most logical for the last leg (France to Burgos). I would appreciate any advice on train travel (or other modes, if appropriate). Time frame of trip is May, 2015.
Thanks for the help.