Ahead of tomorrow's 25th London Marathon, a look at how the race has grown into one of the most important events on the sporting calendar, with world-class athletes at the front of the field and thousands behind raising money for charity. With contributions from Tanni Grey-Thompson, Paula Radcliffe , Steve Redgrave , Michael Watson , Jasper Carrott , Jimmy Savile and cancer battler Jane Tomlinson.
Directors Paula Davies and Peter Small ; Producer Jo McCusker
www.bbc.co.uk/athletics Coverage of the London Marathon begins at 8.45am tomorrow on BBC1