The world's largest duathlon to date is the inaugural London Duathlon, which took place on 17 September 2005 in Richmond Park, Surrey. Approximately 2,500 people took part. The main race consisted of a 10 km run, 20 km cycle ride and 5 km run. Since 2005 London Duathlon has grown to just under 4,000 participants, 2010 saw the first running of the Ultra Distance at London which will consist of 20 km run, 77 km bike and 10 km run. Now in its 9th year, London Duathlon will be taking place on Sunday 14 September 2014 offering athletes of all abilities the chance to race through the stunning surroundings of Richmond Park while on closed roads. "Classic" distance consists of a 10 km run, 44 km cycle ride and 5 km run.