Taxi to San Querico and best way to Florence from Pienza

[JanP]

Do you know of a taxi service from Pienza. Also what do you think would be the fastest way from Pienza to Florence?

[Lourdes]

The fastest way is though Siena: bus to Siena and then from there another bus (there are fast ones that make no stops) to Florence.

Check http://www.busfox.com/timetable/ for timetables from Pienza to Siena.