There are many different kinds. The most common is 6 lanes. There are also a lot of 8 lane pools.
7
8 or 6
it is 6' long and there are 12 lanes. LOL
An Olympic swimming pool usually has 8 lanes, but sometimes has up to 16.
10 but they only use the inside 8
The definition of an Olympic size swimming pool is 10 lanes each 2.5 meters wide, however to prevent the outside lanes being disadvantaged by having to compete with the waves bouncing off the sides of the pool only the middle 8 lanes are ever used.
Competitive swimming pools widely vary in width. The width (in feet) changes depending on how many lanes it has. Most competitive pools have either six, eight, or ten lanes. An official Olympic sized swimming pool is 50 meters by 25 meters. It is ten lanes wide.
8 lanes.
An olympic sized swimming pool is 50 meter long and 25m wide using 8+2 lanes.
You swim over the line.
FINA which is the world governing body for international swimming calls for a 50 Meter pool with 8 lanes. However movement is being created for having pools built with 10 lanes, with the outer 2 not being used for competition. (The waves created by swimmers bounces off the side walls and 'slows' down the swimmers in those lanes, thus an buffer is created by not using lanes 1 and 10 in competition). That said, if you are talking about size, Olympic generally refers to the length of the pool, not the number of lanes.
30000