The All Nations Triathlon

MAY
9
2026
A supersprint triathlon at Dorney Lake in Windsor featuring a 400 m swim, 20 km bike and 5 km run on closed, flat roads and a closed lake, registered with British Triathlon and using electronic chip timing.
Supersprint Triathlon (ru...

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The All Nations Triathlon

The All Nations Triathlon is a supersprint event held at Dorney Lake in Windsor. The event uses a closed lake and closed roads with a flat course. The cycle consists of four laps and the run is an out-and-back route completed twice. The course is wheelchair friendly and may be altered if necessary.

Distances:

  • 400 m swim in the lake on a closed course
  • 20 km bike as four laps on closed, flat roads
  • 5 km run out and back twice on a flat route

The event is registered with British Triathlon and competitors must hold a British Triathlon membership or purchase a single use race pass. Electronic chip timing is used, with instant race results and options to receive results by text. Results include a country flag when a country is entered during registration. The swim may be cancelled or require wetsuits depending on water temperature: under 11 degrees Celsius the swim may be cancelled, over 11 degrees wetsuits must be worn, over 16 degrees wetsuits are optional, and over 22 degrees wetsuits are not allowed.

Race packs are collected from registration tents on the day. Limited bag storage, toilets, showers and changing facilities are available. Parking is provided by the clubhouse and a clubhouse cafe is on site. The event includes medals, trophies and light refreshments for entrants. Visit the organization's website for the most recent information.

5 km
Supersprint Triathlon (run Component)
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