Going back to karting, FV, CF, and FF days:
Green Valley
Dallas International Motor Speedway
Oak Hill Raceway
Hondo (airport course)
Austin AquaFest
Chenault Field (Lake Charles, LA)
Houston Raceway Park
Texas World Speedway (long and short)
Hallett
Heartland Park
Memphis Motor Sports Park
Gateway (old and new)
IRP (oval and road course)
Dirt tracks (midget and mini-sprint):
Chili Bowl
Dodge City
Lone Star Speedway
Rose Bowl
DIRT Motorplex
Cowtown Speedway
Texas Thunder Speedway
Paris Motor Speedway
Showtime Speedway
Gulf Coast Speedway
85 Speedway
281 Speedway
Miller's Cove Speedway
Thunder Mountain Speedway
105 Speedway
Gator Motorplex
Faxon Speedway
Boothill Speedway
Minden Speedway
Bellmead Speedway
Grayson County Speedway
North Texas Motor Speedway
Thunderbird Speedway
Super Bowl Speedway
Stateline Speedway
I'm sure there are others, but 35 years of racing has affected my memory.
Doug McCune