Part 2

Gabby Logan presents live coverage of the 35th annual London Marathon, as world-class runners and fundraisers take part in one of the world's most famous races.

Britain's world record holder and three-time champion Paula Radcliffe makes her farewell appearance ten years after she last ran the event. The women's elite race will be highly contested as reigning champion Edna Kiplagat renews her rivalry with Florence Kiplagat, who she beat by just three seconds in 2014. They also face tough competition from former champions Priscah Jeptoo and Mary Keitany.

The men's race also features a mouth-watering battle between defending champion Wilson Kipsang - aiming for a hat-trick of titles - and the new world record holder Dennis Kimetto, who makes his London debut. The 2015 event also doubles up as the IPC World Championships, with six-time winner David Weir aiming for a record seventh title in the wheelchair race.