Proposal for a street track in my hometown Groningen..
Maybe a bit too many 90deg corners, but this city doesn't offer that much if you want to go through the centre as it's very narrow. Nice bonus for the driver is they drive through the 'neon' when they drive a short part where the prostitutes are.
Oh, it's anticlockwise.
I wished I lived in the 1950's so tracks like this would be possible...
Somewhere between 40 and 60 km long I think didn't measure it. And it contains a part of an abandoned street motor race track called Tolbert. The place where famous Dutch driver Jack Middelburg died in a crash.