© Alysse Jacobs

Dirt - Racing on a surface made of dirt with some sand and clay.
This is the most common form of racing in the United States.

© Amanda Kessler

Turf - Racing on a grass surface. This is the most common form of racing in most countries.

© Emily Shields

All Weather - Racing on an artificial surface made of wax, rubber, and other materials.

© Alysse Jacobs

Mud/Slop - Racing on a dirt surface that has weathered a downpour of rain.