List of dirt track ovals in the United States
Track Name Location Type Classes
Southern Oregon Speedway White City 3/8 mile high banked clay oval IMCA Modified , IMCA Sportmod , Pro Stock , Super 4 , Mini Stock , Dwarf
Sunset Speedway Banks 1/4 mile dirt oval Late Model , IMCA Modified , IMCA Sportmod , Street Stock , 4-Bee , IMCA Sport Compact , PHRA-Pacific Hardtop Racing Assn ,
Madras Speedway Madras 1/4 mile dirt oval Supersport , Sportsman , Sprints , Mini Trucks , Hornets , Junior Class , , Modifieds
Coos Bay Speedway Coos Bay 1/4 mile dirt oval Late Model , Street Stock , Pure Stock , 4 Cylinder
Cottage Grove Speedway Cottage Grove 3/8 mile clay oval 360 Sprints , IMCA Modified , IMCA Sportmod , Limited Sprint , Late Model , Street Stock , Hornets
River City Speedway St. Helens 1/4 mile clay oval Street Stocks , Sportsman , Modified , 4-Cylinder ,
Willamette Speedway Lebanon 1/3 mile dirt oval Super Sport Late Model , Sportsman , Street Stocks , Modified , Hornets
Race track listings by state -- Oregon
Dirt track racing is the single most common form of auto racing in the United States. According to the National Speedway Directory there are over 700 dirt oval tracks in operation in the United States. The composition of the dirt on tracks has an effect on the amount of grip available. On many tracks people will find clay is used with a specific mixture of dirt. Tracks are sometimes banked in the turns and on the straights. This banking is utilized primarily to allow vehicles to carry more speed through the corners. However, some tracks prefer less banked turns. Each track surface will most often be different in one way or another.