The Dock2Dock 5K swim (approximately 3 miles) is open to swimmers aged 16 and over and follows a one-loop long course. Participants can choose between a Mass Start or Rolling Start. A full wetsuit is required for 16-year-olds but optional for those 17+. The swim has a cut-off time of 4 hours 45 minutes to 5 hours 45 minutes, and entry costs £85.ut-off time of 3 hours 45 minutes to 4 hours 30 minutes, and entry costs £60.

Originally starting with just a few hundred participants, Dock2Dock has grown in size while maintaining its friendly and welcoming atmosphere, catering to swimmers of all ages and abilities.

Whether you’re tackling your first 1.5K or pushing your endurance limits with the 15K distance, the Dock2Dock swim provides an exhilarating challenge in one of the world’s great cities. The event village is conveniently located near Royal Docks Watersports, just across from London City Airport, creating a lively hub for both swimmers and supporters.

Water Quality

The water quality at London’s Royal Docks is consistently rated EXCELLENT by bathing standards. Though often mistaken for part of the Thames, the water is actually fed from the Thames Estuary and is carefully monitored to ensure safe swimming conditions. Testing for E. Coli and Intestinal Enterococci is carried out monthly by Socotec on behalf of the Royal Docks Management Authority (RoDMA), with results publicly available.

Swim Start

Swimmers can choose between a Mass Start or a Rolling Start. Those opting for the mass start will enter the water beforehand to acclimatize before setting off together. The rolling start option allows swimmers to enter the water individually within a set window, offering a more relaxed beginning—ideal for those new to open water swimming.

Feed Stations

For longer distances of 3K and above, multiple feed stations are available along the course, stocked with water, electrolytes, and bananas. Swimmers tackling the 10K, 15K, and 20K distances can also bring their own small feed bag and water bottle, accessible at the end of each lap. Further details are provided in the Swimmer Briefing ahead of the event.

Safety and Wetsuits

To enhance safety, tow floats are mandatory for all participants and must be brightly coloured. Wetsuits are optional, except for swimmers aged 12-16, who must wear a full-length wetsuit. Should the water temperature drop below 15°C, wetsuits will become mandatory for all swimmers unless a Skins Pass Application has been approved. Conversely, if temperatures exceed 24°C, wetsuits—including neoprene swim gear—will not be permitted.

The Dock2Dock swim is more than just a race; it’s a celebration of endurance, adventure, and the thrill of open water swimming in London’s iconic docklands. Whether you’re a seasoned athlete or a newcomer to the sport, this event promises an unforgettable experience in a truly unique setting.

Book it here