The Thames Marathon 2019 is a 14km long-distance challenge swim, taking place in the River Thames on Sunday 4 August.
The Thames Marathon stretches from Henley-on-Thames to Marlow and is split into three sections, with swimmers required to exit the water at the three locks (Hambledon, Hurley and Temple).
Food will be available at each of these stops, at 4km, 10km and 11.8km respectively.
There are multiple waves to accomodate a range of abilities, while the cut-off time is 6.5 hours.
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The Leander Club