I did a thing:
A little while ago, I hand-designed this road course - but I never got around to uploading it. I'd estimate it to be about three miles in length, although I never really designed it with a specific length in mind. To the top is a shortcut, as well as a couple of historic configurations from the pre-safety days. The modern configuration is the one in bold, with the pit-lane towards the bottom. As you may be able to tell, I have yet to master pit-exits.
Oh, and if you look
really carefully, you can faintly see another pretty snazzy track I designed with three parallel straights, a bridge and a lake which I then ruined by trying to design spectator seating and safety measures and such like, hence why I left this one bald.