Swim Serpentine 2019
Swim Serpentine is a one-day open water swimming festival staged in the heart of London. Organised by London Marathon Events, the festival is held in and around the beautiful Serpentine […]
Swim Serpentine is a one-day open water swimming festival staged in the heart of London. Organised by London Marathon Events, the festival is held in and around the beautiful Serpentine […]