London Marathon 2021: Watch BBC Sport's trailer as 100,000 runners prepare for Sunday's raceThis video can not be playedTo play this video you need to enable JavaScript in your browser.London Marathon 2021: Watch BBC Sport's trailer as 100,000 runners prepare for Sunday's raceCloseWatch live coverage of the London Marathon from 8am on Sunday across the BBC.SubsectionAthleticsPublished27 September 2021Shareclose panelShare pageCopy linkAbout sharingRead description