nine lanes, lane 1 is usually vacant.
8 lanes
Usually, there should be 8 lanes on a running track.
8 lanes.
8 Lanes
400*8=3200m.
8
The lanes can be numbered 1 through normally 8 or 9 rarely 10, starting with the inside lane.
8
8 or 6
8 or 6
It depends in the standard of the simming race, for Olympic or World Championships then the pool has to have 10 lanes however only the middle 8 are used. For lesser competitions it depends on how many lanes the pool has, usually a minimum of 6 however for smaller and older pools which are very rarely used there may be 4 or 5 lanes