Unlike Portland, other racetracks that allow leaded gasoline are located in rural areas

Portland, Oregon

Portland International Raceway

Densely

populated

Elkhart Lake, Wisconsin

Road America

Alton, Virginia

Virginia International Raceway

Sebring, Florida

Sebring International Raceway

Portland, Oregon

Portland International Raceway

Densely

populated

Elkhart Lake, Wisconsin

Road America

Alton, Virginia

Virginia International Raceway

Sebring, Florida

Sebring International Raceway

Portland, Oregon

Portland International Raceway

Elkhart Lake, Wisconsin

Road America

Densely

populated

Sebring, Florida

Sebring International Raceway

Alton, Virginia

Virginia International Raceway

Portland, Oregon

Portland International Raceway

Elkhart Lake, Wisconsin

Road America

Densely

populated

Sebring, Florida

Sebring International Raceway

Alton, Virginia

Virginia International Raceway

Portland, Oregon

Portland International Raceway

Elkhart Lake, Wisconsin

Road America

Densely

populated

Sebring, Florida

Sebring International Raceway

Alton, Virginia

Virginia International Raceway