Record-breaking charity marathon runner Steve Chalke

In 2011, Steve regained his Guinness World Records title for most money raised by a marathon runner after receiving an incredible £2,330,159.38 in donations following his completion of the Virgin London Marathon.
Ahead of this year's London Marathon, which takes place on Sunday, the 57-year-old tells us the inspiring story behind his incredible fund-raising feat, and in light of this week's shocking events in Boston, how long-distance running events play an important role in bringing people together.The crowds, the music, the noise, the media.