Organised by London Marathon Events, the festival is held in and around the beautiful Serpentine in Hyde Park, the venue for the open water swimming competition at the London 2012 Olympic Games.
Find out more Date: 27-29 July 2018 Prudential Ride London is a world-class festival of cycling.
Taking a cue from the London Marathon, amateur cyclists participate in 100-mile and 46-mile sportives on closed roads in London and Surrey.
Find out more Date: Sunday 22 April 2018 The Virgin Money Giving Mini London Marathon is the official British Athletics three-mile road championships for young athletes aged between 11 and 17.
If you're looking for a challenge, the event is your chance to compete against the best new talent in British road running.
In 2015 almost 5,000 runners from 350 different companies took part in the event, many raising money for the official race charity Seeing is Believing, which is an initiative to help tackle avoidable blindness around the world.