It takes place on the first Sunday in November and starts at sunrise from Hyde Park, London and mostly follows the A23 road to finish at Brighton—a distance of 86 km (54 miles). There are two official stops along the way: Crawley (for coffee) and Preston Park (in a suburb of Brighton). Preston Park is in fact the official finishing point; the cars then proceed to Madeira Drive on the seafront at Brighton.
The organisers emphasise that the event is not a race—they do not even publish the order in which cars finish, and participants are not permitted to exceed an average speed of 20 mph (32 km/h). Any that finish (many don't) before 16.30 are awarded a medal.
The run was next staged in 1927, and since then annually (with the exception of wartime years and due to petrol rationing in 1947), making it the world's longest running motoring event. From 1930, the event has been controlled by the Royal Automobile Club.
The 1953 comedy movie Genevieve takes place during one of these runs.