The London Marathon is set to cause travel disruption across the capital this weekend.
Ahead of the London Marathon on Sunday, we look at the best places to watch the action unfold along the 26-mile route.
The Fleet Half Marathon attracted amateurs, serious athletes and famous faces today.
Thousands of runners will hit the streets of Sussex today for the fifth annual Brighton marathon.
World-record holder Paula Radcliffe will officially start the race. The event is expected to attract over 10 thousand runners.
It is recognised as one of the fastest half marathons in the country- and an ideal race for beginners. This weekend a record number - including Sports Correspondent Sarah Gomme - will take to the streets of Reading for the town's annual half marathon.
Up to 16,500 runners are gearing up to take part in the Reading Half Marathon on Sunday 17 March 2013. The event starts at the town's Madejski Stadium. The route will be exactly the same as last year's course.
More than one thousand runners are taking part in a charity run at Blenheim Palace. The chef Raymond Blanc will start them off on their challenge at 10.30am.
A new fitness event called 'parkrun' is encouraging thousands of people from across the south to participate in weekly 5 kilometre runs. One supporter is Britain's most successful 400m runner, Iwan Thomas. Sally Simmonds joined him at his local run through the park.
Anyone can take part in 'parkruns' and people of all ages and abilities have been taking up the challenge.