Now I am going to put on my car geek hat, so if this section bores you, skip to the next one.
Fan favourites like the Nurburgring Nordschleife, Laguna Seca Raceway, the Monaco GP circuit and the Suzuka GP circuit make a return.
Combined with the traditional GT fictional circuits such as Deep Forest and Trial Mountain Circuit, as well as fictional tracks based on real-life locations (the new London and Rome circuits, as well as the Tokyo R246 from GT3/4, which I've only recently found out is an actual route in Tokyo), the variety and number of tracks is pretty impressive.
Personally, I wish there were more real-world tracks, especially those from the Formula 1 calendar, but I guess we can't have everything.