London Duathlon offers PB-busting competitors free entry in 2016
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The event is due to take place in Richmond Park on 20 September and will be available in a range of distances. There will be a half duathlon (5km run, 22km bike, 5km run), a standard duathlon (10km run, 44km bike, 5km run) and an ultra duathlon (20km run, 77km bike, 10km run).