Bring out your best marathon in Spring 2019 by preparing thoroughly for your big race day. Our Marathon Prep offers the perfect race day rehearsal and long run training in one event, with options for 16, 20 or 24 mile distances.

Scheduled 4 weeks before the Virgin Money London Marathon and conveniently before other major marathon events both in the UK and internationally, we'll provide the ideal conditions to practice your pacing, fuelling and endurance amongst hundreds of other runners to help you head into your marathon feeling prepared and confident.

Set at the spectacular, flat and smooth-surfaced Dorney Lake near Windsor, the course takes you around the perimeter of the water with fuel and water stations placed every 2 miles. Pacers, mile markers and chip-timed results will make it as easy as possible to get your pacing right, so that you can focus on your run and practice refuelling and rehydrating during a race.

Subject to availability, we expect pacers to be running the first 20 miles, clearly marked with target marathon times between 2h45m and 5h30m. 

Not sure on which distance you should run? Don't worry - all three of 16, 20 or 24 miles have the same entry fee, and you can change your mind at any time - if it's before Sunday 24 March, you can drop us an email, or after that, just tell us at the event - even if you change your mind mid-race and decide to stop one or two laps sooner than you planned. 

Plus, you'll receive a Marathon Prep medal, goody bag with replenishing food and drink, and your chip-timed result as soon as you've crossed the line.

Any questions about Marathon Prep? Just give us a call: 020 7684 7185.

Don't miss the chance to prepare for a great marathon race day - take this opportunity to rehearse your:


  • race day nutrition
  • race preparation and travel
  • running in a busy race situation with a marked out course that is new to you
  • running in all of your marathon race kit
  • race rehydration and refuelling
  • recovery and strengthening.


From as little as £18, you can't afford to not prepare for your big day. Due to Dorney Lake capacity and ensuring a great, safe race experience, places are limited. Enter online now.


Event Details

Organiser Details

The Race Organiser
The Race Organiser website
Contact Details
: 02076847185