Off the top of my head...
World-
nurburgring gp (all variations)
Top gear test track
Circuit de la sarthe 2009 (both variations)
Indy (both variations)
Daytona road course
Monza (all variations)
Original-
Kart space (both variations)
Eiger short track
Cape ring (all variations)
City-
Rome
Special stage route 7
Circuito de madrid (all variations)
London
Snow & Dirt-
Toscana
Eiger nordwand (all variations)
Chamonix (all variations) - there was a track called Chamonix in GT4 but was different to the GT5 version.
Thats it i think.