Marathon world record holder Paula Radcliffe launched the Nike+ Human Race at Wembley Stadium this week.

Set to be the world’s largest one day running event, the Nike+ Human Race, to be held on 31st August, will see up to one million runners across the globe competing in a 10k race. GB team captain, Paula Radcliffe, will be leading 30,000 Brits as they ‘Run for Britain’ against 25 different global cities.

London runners will start the race from inside England’s most iconic sporting venue, Wembley Stadium, following a live music concert headlined by a top artist. Those who live outside London can represent their country via the Nike+ website by taking part in the 'Virtual Race'. Runners can simply use Nike+ iPod or SportBand to track their kilometres on race day and then download their run on the Nike+ site to have their results officially counted as part of the race.

To be part of the GB team, you can register for the race from 2nd June via the Nike+ website. A proportion of the registration fee will be donated to one of four charities: UNHCR, Livestrong, WWF and Fairbridge.

Can't get a spot in the UK race? Well, lucky for you there are a whole host of Nike+ Human race cities to choose from, including: Austin, Chicago, Los Angeles, New York, Istanbul, London, Madrid, Munich, Paris, Rome, Warsaw, Melbourne, Seoul, Shanghai, Singapore, Taipei, Tokyo, Bogotá, Buenos Aires, Caracas, Lima, México City, Quito, São Paulo and Vancouver.