London to Brighton refers to a variety of races, tours, charity bicycle rides and rallies that take place between London and Brighton in the United Kingdom.
The route often follows the A23 (and, often, nearby minor roads). The route is full of contrasts, (depending on the starting point and exact route) passing through the London suburbs of Westminster, Brixton, Croydon and Purley, past Gatwick Airport, Crawley and then into the countryside of The Weald, crossing the North and South Downs. Ditchling Beacon on the South Downs (near but not part of the A23) is a steep climb followed by a gentle descent for five miles into Brighton, where the route finishes on the promenade by the Kings Road arches. The current London to Brighton Veteran Car Run does not use the route past the Ditchling Beacon but follows the A273 road up Clayton Hill and rejoins the A23 at Pyecombe.
The route was originally popularised by the London to Brighton Veteran Car Run begun in 1927 for cars built before 1904 and re-enacting the original 1896 Emanicipation Run, which was held on 14 November 1896 to celebrate the passing into law of the Light Locomotives Act which raised the speed limit to 14 mph and did away with the need for a person to walk in front of a mechanised vehicle waving a red flag to warn other road users. In 2007 531 cars participated and over ninety percent of them finished the course; in 2008 there were 550, with 126 international entries from as far away as Australia, Canada, USA, Argentina and South Africa.