Thousands take part in London Marathon 2015
More than 37,000 people are taking part in the London Marathon today. It is the 35th year the marathon has taken place in the capital.
Feeling inspired? How to enter the 2016 London Marathon
If the sight of thousands of people gasping fro breath as they try to stagger over the finish line has not put you off, registration for next year's race is almost open.
Applications for the London Marathon public ballot open on Monday May 4 and close on Friday 8 May at 5pm.
If you are interested, then you just have to visit the London Marathon website when the application window opens.
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The weird and wonderful London Marathon costumes
The London Marathon brings together thousands of people raising money for charity - not to mention some rather unusual costumes.
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Your guide to the London Marathon
Planning on going to the London Marathon tomorrow? Read our handy guide first!