I want 9.4 seconds in the Olympics - Bolt

Jamaican Bolt, 25, is the reigning Olympic champion and world record holder in both distances, with time of 9.58 seconds and 19.19 secs.

"People are looking forward to me running 9 .4, 19 seconds, all amazing," Bolt told BBC Sport.

Bolt's world record of 9.58 secs in the 100m was set at the 2009 World Championships in Berlin. In this run, he covered 10.43m per second in about 40 strides. If he hit the 9.4 sec mark, Bolt should go 10.63 seconds. m per second. That would be the equivalent of 1.88m faster over the distance - about three-quarters the length of one of his strides.

"So I'm working as hard as I can to be able to go as fast as I can."

Speaking on the BBC1 100 Days To Go programme, Bolt added that more performances, such as those which saw him win three gold medals at the 2008 Olympics, would make him "a living legend ".

" They wanna see my personality, me taking advantage and doing crazy stuff, but they wanna also see this moment," he said.

"If I dominate the Olympics, I I'll be a living legend. A living legend walking around. Sounds good."

U.S. swimmer Michael Phelps, 14-time Olympic champion, said he hoped London would be the perfect end to a brilliant career.

"Being able to prepare myself to look back on my career and say I did everything I wanted and I succeeded is something I really want do," the 26-year-old said.

"This is the last chapter of my athletic career and I just hope it goes the way I want. I try to work as hard as possible to make sure."

Meanwhile, the footballer Englishman David Beckham, who hopes to make the UK team, expressed his pride at being able to compete in his home town.

"To see the transformation in East London, somewhere I was raised as a child, is truly amazing.

"As a fan of the Olympics and as a dad, to be able to say that I will be able to take my sons and my daughter to the Olympics where I grew up, I am proud of this."