26.2 Miles 42 Kilometres Enter Now Sunday 3rd October 2021 Read all about it The Course Enter Now Quick Event InfoDorney Marathon Venue: Dorney Lake, Eton College Rowing Centre, off Court Lane, Dorney, Windsor, Berkshire, SL4 6FJ Start times from 09:00am Event Distance: 26.2 miles / 42km Organiser: ActiveTrainingWorld Links to other ATW Events Running Events: New Years Day Love Welwyn Garden City 10K Essex Fast 10k/5k Hillingdon Half & 10K Welwyn Half Marathon Run Fest at Lee Valley Ten Fest at Lee Valley St Albans 10K Hatfield 5 Herts Fast 10k/5k Multi Sport Events: Ashridge Duathlon Hertfordshire Triathlon Stewartby Lake Triathlon Box End Triathlon Centurion Triathlon Bovingdon Beast Duathlon Essex Duathlon