DATE FOR 2025 NOW CONFIRMED
19th July 2025
Entries Coming Soon
CASTLE TO COAST
AN EPIC POINT TO POINT ADVENTURE
Castle to Coast takes athletes on a stunning adventure all the way from Dorney Lake near Windsor to Brighton Sea Front by Swim, Bike & Run.
This challenging course starts with a calm lake swim, before travelling through the rolling Surrey Hills and onto a challenging trail run across the South Downs all the way to Brighton sea front.
This is a course designed to be experienced and enjoyed, alongside friends and club mates. With relaxed cut offs and a fantastic supportive atmosphere thanks to its sportive nature this event brings something special to the sport that you won’t regret taking part in, be this your first or hundredth triathlon.
![](https://castletocoasttri.com/wp-content/uploads/2021/07/X2A0659-1024x683.jpg)
DORNEY LAKE, WINDSOR
1.2 MILE SWIM
![](https://castletocoasttri.com/wp-content/uploads/2021/12/eai_fse_240721_as_00141-1024x682.jpg)
WINDSOR TO HASSOCKS
c. 66 MILES BIKE
![](https://castletocoasttri.com/wp-content/uploads/2021/12/EAI_FULLSat_240721_02259-1024x683.jpg)
HASSOCKS TO BRIGHTON
c. 14 MILES RUN