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

Bring out your best marathon 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 3 weeks before the Virgin Money London Marathon, 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 to keep you going, 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. 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.


  • Course address Dorney Lake, Off Court Lane, Dorney, Windsor
    SL4 6QP
  • Venue facilities: Photography will be provided at this event, a link to which will be communicated to all pre-registered participants within 24 hours of the event. Suitable Medical Cover will be provided at the event in case of a medical emergency. Participants must provide, during registration, details of any pre-existing medical conditions, disabilities, medication or allergies that may be relevant in the administration of any medical assistance. Participants should also provide the same information on the reverse of their bib number (where applicable) prior to starting the event, marking a large, red X (or other contrasting colour, using the pens provided) to the front of their number to alert the medical provider to any such information. Bag Drop will not be available at this event. Runners should leave all belongings with their vehicle where possible and arrive ready to run. Portable Toilets and sanitisation stations will be available around the Start/Finish area for use throughout the event. Refreshments are expected be available throughout the event, provided by Mr Brightside in the main car park. There are no dedicated Changing Rooms/Showers at this event. 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: Full 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

  • Adult Affiliated £33.00
  • Adult Unaffiliated £35.00