High Speed Ring: Looks like Fuji International, has a ginormous tunnel, and is banked like the abandoned portion of Fuji. It could only be Japan, to me.
Midfield also seems to mimic Suzuka, with some ess-bends, hairpins, and the overpass just like Suzuka full circuit.
Special Stage Route 5 could also be Japan, given the penchant for video games to put all the danger of a Midnight Club-style road course from their own backyard...still, I get the feeling of a European city-based course with the roundabout, the red and white curbing, the mysteriously named road signs point to everywhere, yet nowhere.
Apricot Hill seems to have a lot of circuit-design flavor from Jarama, so I've always felt it was in Spain. Yet, no Spanish flags along the front straight.
Red Rock Valley seems like it could only be in America: Huge bankings, desert sky, canyon-like structures to go with the location. Everyone's favorite GT2-only circuit?