Dorney Lake Easter Marathon 

Saturday 3 April 2021

Waves starting at 09.00am



This event is organised by Active Training World

Dorney Lake Easter Marathon


We are looking forward to Spring already with the launch of a new event at Dorney Lake, home to London 2012′s Olympic rowing events.  The Dorney Lake Easter Marathon will take place on Saturday 3rd April 2021.

Dorney Lake, situated near the village of Dorney in Buckinghamshire, is a purpose built rowing lake with grounds that are a perfect backdrop to running as well as rowing. The flat course is ideal for a chip timed personal best over the Marathon distance.

With events around the country being cancelled we are pleased to be able to give you the opportunity to complete the marathon distance in a small scale, socially distanced environment. The event is restricted to just 600 runners and held in traffic free and private grounds. The race will be held under a full UK Athletics race license.

The official chip timed marathon will begin at 09:00am in a time trial format with the athletes with the fastest predicted times going off first. The start line will be similar to a Formula 1 starting grid with athletes being kept socially distanced on the start line and starting in small waves.

Many people are understandably nervous regarding entering events again and we want to assure you that we take every measure we can to organise a safe, socially distanced event. To see this in action watch our video Covid-19 Safety at ActiveTrainingWorld Running and Triathlon Events

We want you to book with confidence so, if this event can no longer go ahead, and an alternative date isn’t found, you will be offered a virtual run or a refund of your entry fee. (Booking fees are non-refundable)

Saturday 3 April 2021.
Wave Start times (based on your estimated completion time): 

Marathon Sub 3 Hours & 6+ Hours

Marathon Between 4 – 6 Hours

Marathon Between 3 – 4 Hours

LOCATION: Dorney Lake, Court Lane, off Lake End Road, Windsor SL4 6FJ


Online entries: Pay by major credit/debit cards



Race numbers will be collected at the the event venue on the morning of the race.

Registration opens at: 07:30am for Sub 3 Hour and 6+ Hour Runners 
Registration opens at 09:00 for all other athletes

There will be an online race briefing made available before the event, it is mandatory to have watched this as there will be no pre-race briefing on the day.

Please arrive in sufficient time to collect your race number.


Book your place


  • If you are booking more than 1 place, please ensure that you complete the individual details for each attendee accurately answering all the questions on their behalf.
  • Please be sure to give your estimated run time as accurately as you can in hours and minutes (e.g.  2.35)
Details Price Qty
Dorney Lake Easter Marathon UKA Unaffilitated EARLY BIRD Entry £37.00 (GBP)*  
Dorney Lake Easter Marathon UKA Affilitated EARLY BIRD Entry £35.00 (GBP)*  
Dorney Lake Easter Marathon UKA Unaffilitated STANDARD Entry £40.00 (GBP)*   Goes On Sale
Dorney Lake Easter Marathon UKA Affilitated STANDARD Entry £38.00 (GBP)*   Goes On Sale
Dorney Lake Easter Marathon UKA Unaffilitated LATE Entry £42.00 (GBP)*   Goes On Sale
Dorney Lake Easter Marathon UKA Affilitated LATE Entry £40.00 (GBP)*   Goes On Sale

Price does not include booking fee



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 the address below.

Spectators are currently not allowed at Dorney Lake. If this situation should change we will update this page.

If you would like more info on this event please use the email address below:


Custom designed medal for all finishers! 

There will be full results on the chip timing website both overall and by category.

Course Information

 For more information about the course and the Race HQ please use this link

The Marathon is 4 laps of a pancake flat route on tarmac paths around the lake.

The course has been measured by London Marathon course measurer Hugh Jones.  Use the link to see a full size, downloadable image.

Training Plans

Whether this is your first marathon or half marathon and want to know how to prepare, or are looking to smash your personal best – following a training plan will increase your chances of improving your goals.

Visit the ATW Shop to submit your requirements for a fully customised Half Marathon or Marathontraining plan.

Other Race Information

It is important that you are fit to run and have not experienced any Covid-19 symptoms in the 14 days leading up to the event.

Race Numbers
Please wear your number pinned to the front of your vest.

Free parking available. Marshals will be on hand to direct you.

Changing Facilities
We will not be providing a changing area, therefore please come changed and ready to race.

Baggage Area
There will be a baggage area available.

Toilets will be provided for the event.

Time Limit
The Marathon @ Dorney Lake has a maximum time restriction of 7 hours, after which there may not be marshals and time keepers available.

If you are unable to attend due to illness, injury, family bereavement, jury service you will only be eligible for a refund on production of official evidence: Positive Covid-19 test result, Doctor’s note, Death Certificate etc.

Event Cancellation
If the event should have to be cancelled due to reasons beyond ATW’s control (for example, severe weather, local or national lockdown) entrants will be given a range of options to choose from, which will include a refund of their entry fee.


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

Your details will kept in accordance with the Active Training World Privacy Policy

Your name, date of birth and email details will be onto the chip timing company. Personal details will be deleted 1 week after the event.

Where specified on the booking form any medical information will be passed onto the medical team present at the event. 


1) I am over the age of 18 on the day of the event. 

2)  I declare that I am medically fit to compete & understand that I do so entirely at my own risk.

3) 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.

4) I understand the organisers reserve the right to alter the arrangements and conditions, should circumstances require.

5)  By entering this event, I accept UKA rules.