Road racing is done on CLOSED streets. Track racing is on a track build specifically for thae purpose of racing. Again, both are closed, controlled courses.

There's no specifics for a horse racing track. Horse race track dimensions vary according to the style of racing, the distances and the type of events as per the country's racing code.

track

A normal racing track is a mile.

There are many good racing games in Wii like Mario Kart Wii, Sonic & Sega All Star Racing, Excite truck and Track Mania