I like the idea of the regions broken down like that. Is that a standardized set of sorts?
One thing I found early on was that folks would often search by state, rather than by distance. This always perplexed me because they would often miss a great track that’s sometimes in a different state, yet closer to their location
If you’re merely looking for tracks around a location, checkout tracks.kartpulse.com .
I’m region 2, Division 4 (MN), but also 30miles away from Division 3 (Wisconsin).
There’s four outdoor “racing” tracks within 250 miles of me:
Stockholm Karting Center
Eau Claire Raceway (MKA)
USAIR Motorsports Raceway Shawano
61 Kartway
Incidentally, there’s 19 ovals within the same distance: https://goo.gl/QUWjsd