Castle to Coast Triathlon

JUL
24
2027
Point to point triathlon from Dorney Lake near Windsor to Brighton Sea Front with a lake swim, a long bike through Surrey and a South Downs trail run.
Sat 24 Jul 2027
Middle distance 1.2 mi 67 km 14 mi

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Castle to Coast Triathlon

Castle to Coast is a point to point triathlon running from Dorney Lake near Windsor to Brighton Sea Front. The course uses three disciplines in sequence: a lake swim, a long bike leg and a trail run across the South Downs.

The swim takes place in the calm waters of Dorney Lake. The bike leg travels from Windsor through the Surrey Hills to Hassocks, covering approximately sixty seven miles. The final stage is a trail run from Hassocks to Brighton Sea Front across the South Downs.

The event is scheduled for 24 July 2027. It is described as an experience to be shared with friends and club mates, with relaxed cut offs and a sportive atmosphere that aims to support participants over the full route.

Distances:

  • 1.2 mile swim at Dorney Lake, Windsor
  • c. 67 miles bike from Windsor to Hassocks
  • c. 14 miles run from Hassocks to Brighton Sea Front

Additional event information includes a route overview and an event guide. The course combines flat lake swimming, hilly road cycling through Surrey and a trail run over the South Downs into Brighton. Visit the organization's website for the most recent information.

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