Cheer on runners and do some Sunday sightseeing at the same time. The Royal Parks Half Marathon passes a host of famous landmarks along its 13.1\u00a0mile route on closed roads. These include Trafalgar Square, the London Eye and Buckingham Palace. The run also covers four of London\u2019s eight Royal Parks: The Green Park, St James\u2019 Park, Hyde Park and Kensington Gardens. You can download a map from the website, to see the full route. The race starts and ends at Hyde Park.