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The One
on the Lake - Dorney

Set at the spectacular, flat, and smooth-surfaced Dorney Lake near Windsor, this event for the ones that enjoy being by the water. Join for the distances in triathlon, aquabike, duathlon, aquathlon and swim!

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THE ONE NOT TO MISS.

DATE

September 7, 2025

LOCATION

Dorney Lake, Windsor

DISTANCES

Triathlon, Swim, Duathlon, Aquabike, Aquathlon

RACES

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Triathlon

Standard
£75
Sprint
£65
Super Sprint
£55
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Multisport (DT/AB/AT)

Standard
£55-£60
Sprint
£50-£55
Super Sprint
£45-£50
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Swim

3000m
£40
1500m
£30
750m
£25

Race maps

Please see our interactive routes maps with the full routes by distance including water stations and other facilities here:

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Your entry includes

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Finisher Medal

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Refreshments

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Chip Timing

EVENT IN PHOTOS

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EVENT
INFORMATION

Distances* & Start Times*

*subject to change closer to the event

(swipe the table left-right on mobile for more info)

Event
Distance
Swim
Bike
Run
Start Time
Triathlon
Standard
1500m
40k
10k
08:00am
Triathlon
Sprint
750m
20k
5k
08.45am
Triathlon
Super Sprint
400m
10k
2.5k
09:30am
Duathlon
Standard
40k
5k+10k
08:15am
Duathlon
Sprint
20k
5k+5k
09:00am
Duathlon
Super Sprint
10k
2.5k+2.5k
09:45am
Aquabike
Standard
1500m
40k
08:00am
Aquabike
Sprint
750m
20k
08:45am
Aquabike
Super Sprint
400m
10k
09:30am
Aquathlon
Standard
1500m
10k
08:00am
Aquathlon
Sprint
750m
5k
08:45am
Aquathlon
Super Sprint
400m
2.5k
09:30am
Swim
3000m
3000m
10:15am
Swim
1500m
1500m
10:15am
Swim
750m
750m
10:15am

Village Location

Event village in situated in Dorney Lake Boathouse, Court Ln, Dorney, Windsor, SL4 6QP

On arrival to the site please follow the event signage.

What3Words: ///cheer.spins.rails

Race Pack Collection

Your timing chip, bib number and bike/helmet stickers will be available for collection on the event day from 06:45am.  These will be ready for you to collect from Registration Tent, which will be located between the river and transition.

 

Depending on the event discipline you are competing in, you will be supplied with the following:

·      timing chip (to be worn on your left ankle);

·      bib number;

·      bike and helmet stickers;

·      swim hat.

Participants should not expect to receive anything by mail.

Registration on the day might be available.

Transition area

Transition area opens at 06:45am. To enter transition, you must show your corresponding event number and bike sticker (which must be stuck to your seat post) to the event marshal.

The Route

All swim, bike and run courses are marked with signs and well marshalled.

The course map is available to view here.

Based on the distance you are completing you will be required to do a particular number of laps at each leg.

Pre-Race Email

Detailed pre-race information will be published to all registered participants 2 weeks prior to the event.

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FACILITIES

Medical Cover

Suitable medical cover is provided at our events in case of a medical emergency.

Bag Drop

Whilst we recommend bringing as little as possible, runners can leave essential belongings with us using the tear-off baggage strip on their bib.
Bag drop will not be available for the multisport events. Participants should leave all belongings with their vehicle/in transition where possible and arrive ready to run

Catering

We will have a food caterer onsite for pre and post race refreshments.

Photography

Event images are expected to be available, usually within 24 hours of the event.

Toilets

There are free portable toilets in the event village. This is your only chance to go, as there won't be toilets on the route.

Changing Room / Showers

There are no dedicated changing rooms/showers.

Water / Snack Stations

Water will be available at the start and finish for a refill.

Run routes only will have the water stations on course. Participants must carry with them anything necessary to refuel and hydrate during the remainder of the event.

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OTHER USEFUL INFORMATION

Spectators

Spectators are permitted anywhere in the start finish area. Please be mindful of others' comfort and safety in more popular locations, including the finish area.

Dogs

Participants must not be accompanied by a personally owned or controlled dog during an event. Entries may be accepted from participants with medical assistance dogs, subject to them being correctly registered and identifiable as such, and subject to prior approval by the Event Director.

Buggies, Pushchairs and Strollers

This event is not suitable for buggies, pushchairs, strollers (or similar) due to the nature of the terrain.

Wheelchairs

These events are suitable for wheelchair users. Any participants wishing to compete with specialised equipment are asked to contact us before entering to ensure we can accommodate any additional requirements.

Earphones / Headphones

Noise-cancelling earphones/headphones are prohibited and, whilst we discourage the use of other earphones/headphones at our events, participants choosing to use them should ensure they are set to a low enough volume that instructions from event officials can be clearly understood. 

Race Deferrals

Race deferrals are allowed until the event registration is closed (usually the Friday 12noon before the event date).

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