Dirt track racing is the single most common form of auto racing in the

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territori ...

. According to the National Speedway Directory, there are over 700 dirt oval tracks in operation in the US. The composition of the dirt on tracks has an effect on the amount of grip available. Many tracks use

clay Clay is a type of fine-grained natural soil material containing clay minerals (hydrous aluminium phyllosilicates, e.g. kaolin, Al2 Si2 O5( OH)4). Clays develop plasticity when wet, due to a molecular film of water surrounding the clay par ...

with a specific mixture of

dirt Dirt is an unclean matter, especially when in contact with a person's clothes, skin, or possessions. In such cases, they are said to become dirty. Common types of dirt include: * Debris: scattered pieces of waste or remains * Dust: a gener ...

. 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.

Notable dirt tracks

Race track listings by state

Alabama

Alaska

Arkansas

California

Delaware

Florida

Illinois

Indiana

Iowa

Kansas

Maryland

The Greater Cumberland Speedway Cumberland Maryland

Minnesota

Missouri

Nebraska

Nevada

New Jersey

New York

Ohio

Oregon

Pennsylvania

Tennessee

Texas

Vermont

West Virginia

Wisconsin

References

{{Reflist

External links

National Speedway Directory
Ovals