A relay race over a one mile course during which runners will scale the heights of Tower Bridge.
Using Potters Fields Park as the start/finish and transition area, teams of 10 runners from each firm will each take to the 1-mile circuit through one of London's primary landmarks.
The Virgin Active Square Mile Bridge Relay will send competitors firstly into the ultra contemporary buildings of the More London Estate and then onto Tower Bridge, up the South Tower, along the breathtaking walkway 44m above the Thames and back down to the tower to street level.
It is then a short sprint to hand over the baton to the next team member.
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