Rented bikes (8/12/07) from Locacycle in Amboise and followed bike routes signs to/from Chauteau Chenenonceaux.  A very nice ride through the French countryside!

Mostly on designated cycle route, bit busy in Montrichard.

Amboise to Chaumont-Sur-Loire Chateau, return on the other side of the Loire on quiet small roads apart from a small section on a busy road.