Paula's pain, Phelps' glory and Bolt's stunning run

British fans mix with Chinese supporters to get a view of the marathon Photograph: Tom Jenkins /Guardian

Paula Radcliffe leads the way early in the race Photograph: Tom Jenkins/Guardian

Constantina Tomescu of Romania, the eventual race winner, cools off Photograph: Tom Jenkins/Guardian

Britain's Liz Yelling offers some water to Paula Radcliffe Photograph: Tom Jenkins/Guardian

Father and daughter cheer on the runners while speeding next to them on a moped. Photograph: Tom Jenkins/Guardian

Paula Radcliffe cools down by putting a sponge on her head Photograph: Tom Jenkins/Guardian

With just a mile or two left to race, leader Constantina Tomescu anxiously looks round to see how far back the chasing pack are Photograph: Tom Jenkins/Guardian

Paula Radcliffe hobbles to a stop as she crosses the finish line Photograph: Tom Jenkins/Guardian

Paula Radcliffe breaks down in tears as she is kissed by husband Gary Photograph: Tom Jenkins/Guardian

The US swimming team prepares for their relay final Photograph: Dan Chung/Guardian

Michael Phelps starts his leg in the 4x100m race Photograph: Dan Chung/Guardian

Phelps takes the butterfly leg Photograph: Dan Chung/Guardian

Phelps shares his joy with his team-mates after the US take gold Photograph: Dan Chung/Guardian

Phelps is surrounded by photographers as he joins his family to celebrates his gold medal Photograph: Dan Chung/Guardian

Phelps holds his gold after the medal ceremony Photograph: Dan Chung/Guardian

Runners of the mens 100m cross the finish line, with Usain Bolt (centre) clear of the pack. His world record time, later adjusted to 9.69, is on the right Photograph: Dan Chung/Guardian

Bolt celebrates his win on the Beijing track Photograph: Dan Chung/Guardian