The Royal Parks half marathon takes in four of London's best known parks - Hyde Park, Kensington Gardens, St James’s Park and The Green Park.
The route began in Hyde Park at 9am, heading through Green Park and on past Buckingham Palace into St James' Park. It then moves across Embankment taking in the Houses of Parliament and the London Eye.
Finally it loops back round through Admiralty Arch and Kensington Gardens before finishing back in Hyde Park.
Nearly 100 sporting projectsin and around the capital have received a boost from the London Marathon Charitable Trust this year.
Grants worth more than £3.5million from the surplus made by the London Marathon organisation last yearhave been awarded in grants to 91 projects.
The largest award was made to the Ramgarhia Sports Club in Ealing to bring disused cricket facilities at Durden Park back into use, while the smallest went to Heathrow Gymnastic Club in Hounslow for additional fitness equipment.
Other large grants included: £150,000 for the regeneration of Copthall Playing Fields in Barnet; £150,000 for Holborn community centre in Camden; and £150,000 for a compact athletics facility at Stoke Newington School in Hackney.
Bionic marathon runner, Claire Lomas, was presented with medals donated by other runners this lunchtime. Olympic gold medallist Matthew Pinsent presented her with the_ box of medals._Claire missed out on a real marathon medal as they are only given to people who complete the course in under 24 hours.