Tens of thousands of runners, including a host of celebrities, have completed the London Marathon. Around 40,000 people tackled the 26.2-mile course from Greenwich and Blackheath in southeast London and to Buckingham Palace via Tower Bridge and Canary Wharf. Ex-Page Three girl Katie Price, her husband Peter Andre, celebrity chef Gordon Ramsay and model Nell McAndrew were some of the stars who took part. Keith Duffy of Irish band Boyzone ran for The National Autistic Society after his nine-year-old daughter Mia was diagnosed with the condition at just 18 months. He smashed his previous personal best by over 45 minutes, clocking in at three hours 52 minutes 33 seconds. Olympic gold medal-winning cyclist Chris Boardman, who ran for the National Autistic Society, described the experience as "horrible" and said: "I don't fancy doing another one." Paul Simons, from Edgware, north London, completed the fastest-ever marathon dressed as Santa Claus. The 45-year-old postman finished in 2 hours 55 minutes and 50 seconds. He said: "I got carried away with all the cheers and all the excitement. Three hours is magical, it's the pinnacle. You can hold your head up high if you are a member of the sub-three hours club." Price and Andre took seven hours 11 minutes to complete the course.