The Nike+ Human Race takes place on 31 August.
The event will feature thousands of runners. Led by Paula Radcliffe, 30,000 of them will exit Wembley Stadium on the 10K challenge.
"Run with a million runners in a worldwide 10K. Race in one of 25 cities. Or run where you are with Nike + iPod," the event website says.
In order to run where you are, you'll need either a Nike+ Sportsband or a Nike+ iPod and Sport Kit. Runners must sign-up online on the event website, train for the event at their own leisure, and then must race and sync their run on 31 August.
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