London Duathlon 2012. The world's largest duathlon is also adding a new distance to the 2012 schedule, the International 55k (10km run, 40km bike, 5km run).
To secure your place click here The London Duathlon is the world's largest duathlon held annually in Richmond Park, south-west London, combining running or cycling. Within the confines of the Royal Park, which is closed to traffic for the day, it offers athletes of all abilities the chance to race in a unique environment.
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