I race at Twin City Hobby & Raceway in Brooklyn Park, MN.
www.twincityhobby.com Both indoor offroad, and indoor onroad (ozite). VERY helpfull hobby shop, with good selection of parts, and what they don't have, they'll order. Fun racing, and great people to race with. They're hosting the OktoberFast race, which is the first race of the US Triple Crown Series. There's also a big offroad race coming up, and I wouldn't be surprized if there'll be more regional/national races in the near future!