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Castle to Coast

Triathlon: Swim 1.24mi, Bike 65mi, Run 13.1mi
Event details
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We wanted to create something new in the world of triathlon, that broke away from the obsession of time and racing and embraced the adventure that is swim bike run. From that Castle to Coast was born an epic one day triathlon sportive from Windsor to Brighton.

How to enter the Castle to Coast

  1. Castle to Coast

    Triathlon: Swim 1.24mi, Bike 65mi, Run 13.1mi
    Event passed

Castle to Coast route


Distance: 1.2 miles
Type: Open Water Swim
The swim takes place at the wonderful Eton Dorney rowing centre, swimming a single continuous lap. Pre Race you'll make your way from transition to the start area a short walk away. Once everybody is suitably psyched up each wave will make their way into the water and begin their swim.
Water safety will be provided by Swim Safety with support kayakers and power boats ensuring you have a safe and enjoyable event.


Distance: 65 miles
Gain: 3400ft
Type: Open Road / Country Lanes
Route Still Subject To Change.

This scenic but challenging bike course takes us all the way from Windsor Castle to the foot of Ditchling Beacon.
On the way you'll take a scenic tour of Berkshire, Surrey and Sussex heading straight through the surrey hills, an area of outstanding natural beauty and challenging climbs.

The bike takes place as a relaxed sportive on open roads and in accordance with the rules of the road. Several feed/toilet stops will be provided along the route along with mechanical support.


Distance: 13.1 miles
Gain: 1292ft
Type: 90% trail / 10% road
Route Still Subject To Change.

To finish the event off we've got a fantastically scenic run heading from Hassocks over ditching beacon and down to the sea front at Brighton where your day out will finish.
The run route has a challenging start taking you up onto the South Downs Way, along Ditching Beacon and provides epic views over the surrounding countryside. You will then slowly descend through the countryside all the way down to the sea front. The run is around 90% trail along public rights of way and around 10% along road footpaths.

Event Details

What’s Included
  • Unique finishers medal
  • Tech T shirt

Castle to Coast weather forecast

Rain until morning, starting again in the evening.

Predicted highs
Predicted lows
IconHigh chance of rain
IconModerate breeze possible, up to 15mph



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