Marathon Prep Race - Dorney Lake - Dorney Lake Marathon Prep Race

Bring out your best marathon in Spring 2020 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 at least the first 16 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. Prior to Sunday 22 March, you can drop us an email but otherwise just tell us at the event - before the race at registration or, if you change your mind mid-race and decide to run one or two laps more/fewer than planned, as soon as you finish. You'll also receive a Marathon Prep medal, 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 on 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 £23, 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.


  • Course address Dorney Lake, Off Court Lane, Dorney, Windsor
    SL4 6QP
  • Venue facilities: Bag Drop: Whilst we would recommend bringing as little as possible, you can leave your belongings with us while you race using the tear-off baggage strip on your race number, collecting after you finish by showing your number. Toilets: Portable toilets will be available at the start/finish area, passed on each lap. Race Marshals: Marshals will be present on the course throughout the race. Distance Markers: The route will be clearly indicated with arrows, tape and distance markers where necessary. Water/Fuel Stations: There will be water/fuel stations on the route every 2 miles at which water will be provided in recyclable plastic cups. Goody Bag: All runners will receive water and snacks on finishing the race. Refreshments: Refreshments will be available in the main building throughout the event. Changing/Showers: Changing and shower facilities will be available at this race. Lost Property: Lost property from an event will be kept for one month. If unclaimed, or ownership cannot be determined, lost property items will be donated to charity.



  • Race Title: Dorney Lake Marathon Prep Race
  • Race Date:
  • Licence Status: Provisional Licence
  • Distance: 20 miles
  • Limit:1000
  • No of Entrants Previously:600
  • Minimum Age: 18
  • Profile: Undulating
  • Water stations:Yes
  • Awards/mementos: Yes
  • Distance markers: miles
  • Course Address: Dorney Lake, Off Court Lane, Dorney, Windsor
    SL4 6QP

Entry Fees