London's Mayor is famous for his love of two wheeled transport. He was joined this morning by Olympic double gold medallist Laura Trott to launch a two day cycling event, free for anybody to join.
You can find out how to register here: http://www.prudentialridelondon.co.uk/
More top news
Tributes have been left in Caledonian Road in Islington where 15-year-old Alan Cartwright died after he was stabbed.
A boy has died after he and his friends were attacked while cycling in north London.
Three police officers have been praised for their actions in helping a four-year-old boy who had become stuck on a roof in Newham.