- The 26.2-mile race attracts more than 48,000 runners and about 1m spectators.
- It is the biggest single-day charity event of the year, raising an estimated 拢35m for various charities.
- Sponsors and official suppliers include Flora, Adidas, Renault, Vittel, Daily Mail and Fuller's London Pride.
- Two-time Olympic gold medallist Haile Gebrselassie will race this year alongside celebrities including Ronan Keating and Gordon Ramsay.