In reply to knthrak1982:
We stayed On the crozon peninsula last June. There were plenty of quiet cycle routes, signposted and with maps from the tourist offices, at the peninsula tip near camaret. The best thing though was to take the boat from Camaret to the Ouessant isle. The isle is fairly flat but with a great coastline, some sandy coves and very little road traffic. The ferry is met by representatives from bike hirers and the roads are all covered with cyclists of all ages and shapes. Minimal cars . Very relaxing .