Run by Rémi, bus line C links Amboise’s Théâtre with Tours’ Halte Routière (bus station; one hour, eight daily Monday to Saturday) and Chenonceau (22 minutes, one or two daily Monday to Saturday), from where trains go to Tours.
Amboise's train station is 1.5km north of the château, on the opposite side of the Loire.
Blois €7.20, 20 minutes, 15 to 20 daily.
Paris €18.50 to €60.50, two hours; a handful of direct trains go to Gare d’Austerlitz, other trains serve Gare Montparnasse.
Tours €5.70, 13 to 23 minutes, 13 to 22 daily.
There's free parking west of the tourist office along quai du Général de Gaulle (ie along the river; parking is prohibited up the ramp on Friday and Sunday mornings because of the market) and, a few blocks inland, at place Richelieu and nearby Parking des Tanneurs.