It's a track for bicycle or motorcycle racing.
Apparently velodromes are used for cycling races.
The typical velodrome (banked bicycle racing track) is 250 meters in length.
A Velodrome is a track used for bicycle racing. It was also lesser known for motorcycle racing as well. The surface can be made of parquet wood, it is typically banked, an oval track, and is generally indoors. Track Cycling is the sport contested in an Velodrome.
In a track cycling the riders cycle around the track in a anti clockwise directionTrack cycling (on a velodrome or banked bicycle racing oval) is always counter-clockwise, turning left. This is the standard direction for racing throughout the world. -
The chariot racing track in Rome was the Circus Maximus.
A bicycle
A race track.
Road racing and track racing are both forms of racing, but they take place in different settings and have distinct characteristics. Road racing typically occurs on public roads or specially designed road courses, featuring varying terrain and environmental conditions. Track racing, on the other hand, takes place on a closed circuit track with consistent surfaces and turns, allowing for precise measurements of performance. The vehicles used in each type of racing may also differ in design and specifications to accommodate the specific demands of the racing environment.
this is usually called the "S" bend on a race track
That will depend entirely on what type of racing you intend to be doing.
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.