In Pictures: Sun shines for runners in London Marathon

A general view of the mass participation race on Tower Bridge during the TCS London Marathon (Jonathan Brady/PA) - (PA Wire)

More than 56,000 people have been pounding the streets of the capital in this year’s London Marathon.

The event could set a new record for the world’s biggest marathon, which is currently held by the TCS New York Marathon in November when there were 55,646 finishers.

A general view from inside the viewing window above Tower Bridge of a runner in fancy dress (Jonathan Brady/PA) (PA Wire)

A large boat goes under Tower Bridge as the mass participation race goes by (Jonathan Brady/PA) (PA Wire)

(Jonathan Brady/PA) (PA Wire)

(Jonathan Brady/PA) (PA Wire)

(Jonathan Brady/PA) (PA Wire)

Visitors to Tower Bridge walk across the walkway as the race progresses below (Jonathan Brady/PA) (PA Wire)

(Jonathan Brady/PA) (PA Wire)

(Jonathan Brady/PA) (PA Wire)

(Jonathan Brady/PA) (PA Wire)

(Jonathan Brady/PA) (PA Wire)

A visitor to Tower Bridge lays on the glass walk (Jonathan Brady/PA) (PA Wire)

(Jonathan Brady/PA) (PA Wire)

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