Its a LONG haul from Houston, Road Atl is a possibility about once a year though :)

Mosport
Watkins Glen
NHIS
MIS
DC Temp. Circuit (ALMS)
Infineon
Laguna Seca
Road Atlanta
Sebring
Dover
VIR
Richmond
Mid-Ohio
Cleveland (Burke Lakefront Airport)
Circuit Gilles Villeneuve (Montreal)
Silverstone
Brands Hatch
Toronto Indy course
Daytona

19, I know I'm missing a couple

Driven on:
Pacific Raceways
Bremerton Motorsports park.

Watched at:
Gilles Villeneuve Montreal
Indianapolis Motor Speedway
Long Beach -Saw Eric race! :)

I've only been to three tracks - but top this - I rode shotgun with Sabine Schmidt! Yes, she is as cute and funny as you might think, and she can drive!

My three tracks:
Brainerd (long course and competition course)
Autobahn (South)
Road America

I am blessed - also rode with Mark White in his Porsche cup car and a couple of other pro racers. I have a lot of fun driving in DEs but it is nothing like race pace with Mark. And I used to sneer at Neons until I got in a Neon owned and raced by a Chrysler engineer. That was my first ride in a real race car and I lost a prejudice that day.