Why keep editing and linking to an image when you can simply use the forum ?
  
Here's a start:
 
 
REAL CIRCUITS
Circuit de la Sarthe | Le Mans, France
 
Nürburgring | Nürburg, Germany
GP Strecke
 
Nürburgring | Nürburg, Germany
Nordschleife 
Fuji Speedway | Oyama, Japan
Suzuka Circuit | Suzuka, Japan
Tsukuba Circuit | Shimotsuma, Japan
Daytona Speedway | Daytona, USA
Indianapolis Speedway | Indianapolis, USA
Dunsfold Aerodrome | Cranleigh, England
note: aka Top Gear Test Track
  
 
ORIGINAL TRACKS
in real locations
 
Tokyo R246  |  Tokyo, Japan
London, England
 
Passo dello Stelvio, Italy
? | (Tuscany), Italy
Rome, Italy
 
 
Madrid, Spain
 
Eiger Nordwand | Kleine Scheidegg, Switzerland
note: this road doesn't exist in reality
  
  
FANTASY TRACKS
fictional tracks in fictional locations
 
High Speed Ring
Special Stage Route 5
DIRT & SNOW 
 
? | (Tuscany), Italy
note: likely forms one big circuit with the asphalt track
  
PHOTO LOCATIONS
San Gimignano, Italy
town square
Abbazia di San Galgano | Chiusdino, Italy
abbey ruins
 
Nürburg | Nürburg, Germany
castle ruins
 
Bad Neuenahr-Ahrweiler, Germany
Hotel zum Stern (Johannisstraße 15)
 
Bad Neuenahr-Ahrweiler, Germany
Niederhutstraße
 
Bad Neuenahr-Ahrweiler, Germany
Niedertor
Bad Neuenahr-Ahrweiler, Germany
Lenné-Park
Kyoto, Japan
Shirakawa
Kamakura, Japan
Shakado Pass
Bern, Switzerland
Marktgasse
???
in front of a restaurant or hotel
???
parking garage
???
docks, port
???
empty warehouse
???
black room
???
wind tunnel