Oooh, I might have some of you guys beat if I include the circle tracks.

SCCA:
the Blimp Base in Hitchcock, TX (IIRC .7 mile road course on the pavement of a Blimp Base)
Cabaniss Naval Air Station (Corpus Christi, TX)
Texas World Speedway (both 1.8 and 2.9 configurations)
Motorsports Ranch - Ft. Worth
Texas Motor Speedway
Hallett Motor Racing Circuit
Road Atlanta

Quarter Midgets (tiny ovals):
River City (Austin)
Lone Star (San Antonio)
Oklahoma (OK City)
Topeka ("temporary" parking lot with decambered T1&2... won all the marbles)
Pueblo (at I think Pueblo Motorsports Park)
Phoenix (South Mountain)
Langley, BC, Canada (outside Vancouver, about 5 miles from the US Border)

And I've got about 30 laps in an ITA RX7 on the oval outside Austin, Thunderhill Raceway.

My favorite track was the little oval in Topeka because we kicked everybody's ass... they had no idea how to setup the car for the decambered Turn 1 &2, and I impressed everybody with my left front tire. Somebody knocked a rumble strip off, and they glued it back on -- every time I'd drive by I'd tick the tooth with the tire (like I did before it got broken off) and with the glue oozing out after about 50 laps there was a stripe on the inside shoulder of the tire.