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