Dorney Triathlon

Sunday 30th August 2020.

The sprint distance race will begin at 07:00AM. The Standard distance race will begin at 07:15AM

This event will feature sprint and standard distances. 

Athletes of all abilities can enter this triathlon.

Online entries:Pay by major credit/debit cards



We actively welcome support and involvement from local communities, businesses and individuals. If you would like to find out more about marshalling, sponsorship or group bookings please contact us at:

icon Registration

Race numbers and timing chips will be collected at Dorney Lake on the morning of the race. Registration will open at 05:40AM and close at 06:40AM. Bikes must be racked and transition will be cleared of competitors by 06:45AM. Please arrive in plenty of time to collect your registration pack and set up in transition.

Detailed race notes will be sent out a week before the race. 

icon Event Profile

Event Name

Dorney Lake Triathlon

Event Distance

Sprint: 750m open water swim, 20k bike and 5k run. Standard: 1500m open water swim, 40k bike and 10k run


The Bike course and run course are both pancake flat!


Yes - minimum 2 and maximum 3. When registering please order athletes as 1. swim, 2. bike, 3. run


Water will be provided and at the end of the race and on the run laps






15 - sprint, 17 - standard (As of 31st December 2020)


ATW & RunThrough



a) The higher of a £1 / 6% service fee will be applied at the checkout. b) A £6 BTF licence fee is payable on the morning of the race for non-BTF members.


icon Prizes

Medal for all finishers

Overall 1st, 2nd, 3rd male and female prizes

Age group prizes in in BTF 10 year bands for fastest male and female in each age group


icon Course Information

The race starts and finishes in the same location at Dorney Lake in Windsor

The race consisits of an open water swim, a traffic free and safe bike course and a run course that goes out and back along the lake. 

Swim Course

Bike Course

Run Course

icon Training Plans

ActiveTrainingWorld have free training plans to help you train for this event:


Other Race Information

Race Start
Wave start times and swim times will be available closer to the event date. The race briefing is compulsory before the start.

Parking and Toilets
Free parking is available at the venue. Toilets will be provided.

BTF rules
All competitors must comply with BTF rules. We strongly recommend that you read them HERE. Only competitors wearing their ID will be allowed in or out of the transition area.

BTF licence fee
A £6 BTF licence fee is payable on the morning of the race for non-BTF members. BTF members must produce their license at registration or a £6 levy will be charged.

If circumstances deem the course to be unsafe or it falls outside the BTF guidelines, ATW have the right to change, move or cancel the event at short notice.

ActiveTrainingWorld do not offer transfers or deferrals for this event or any events listed on the website. Instead every person who books an event has the option to purchase "Refund Protection" which allows them to get a full refund of entry fees in the event of an injury, illness or other reasons specified on the policy. The link to claim your refund will be on your confirmation email along with your booking reference number. Terms & Conditions are here


By entering this event you agree to the below terms and conditions

DECLARATION:  I declare that I am medically fit to compete & understand that I do so entirely at my own risk.  I understand that I enter the race at my own risk and that no person(s) or organisation(s) will be held responsible for any accident, injury or loss to myself, prior to, during or after the event. I understand the organisers reserve the right to alter the arrangements and conditions should circumstances require. 

In the unfortunate cancellation of the event through circumstances beyond the control of the race organisers. I understand that I will be eligible for a free place, up to the same value, in an ATW event taking place in the next 12 months 

LOCATION: Dorney Lake, Windsor

Location: Off Court Lane, Windsor, Berkshire, Berkshire, Berkshire, SL4 6QP