how many feet is an olympic size pool
Olympic-size swimming pool There must be two spaces 2.5 m (8 ft 2 in) wide outside lanes 1 and 8 (in effect, two empty lanes).[2] The length of 50 metres (164 ft) must be between the touch pads at the end of each lane, if they are used.[2] If starting blocks are used, then there must be a minimum depth of 1.35 metres (4.4 ft) from between 1.0 metre (3 ft) from the end of the pool to at least 6.0 metres (20 ft) from the end of the pool. At all other points, the minimum depth is 1.0 metre (3 ft).[2] If the pool is used for Olympic Games or World Championships, then the minimum depth is increased to 2.0 metres (7 ft).[2]
400 metres at the Olympics Only two athletes have won the event twice: Marie-José Pérec became the first to defend the title in 1996, then Michael Johnson followed with victories in 1996 and 2000. No athlete has won more than three medals. Several medalists in the event have also had success in the 200 metres at the Olympics: Johnson, Perec, Szewińska and Valerie Brisco-Hooks have all won titles at both distances. Athletes chosen for the event almost always form part of their nation's team for the 4×400 metres relay at the Olympics.