This scenic route winds its way through four of London’s eight Royal Parks - Green Park, St James’s Park, Hyde Park and Kensington Gardens - in all their autumnal splendour, taking in superb views of Buckingham Palace, the Houses of Parliament, the London Eye and the Royal Albert Hall. Over 16,000 runners take part in this 13.1 mile run through central London, with its spectacular views, and thousands of spectators also join in, to cheer on their friends and family and share this amazing day.