Park run started with 13 runners in Bushy park in 2004 and with support from Nike, Lucozade Sport, London Marathon and Sweatshop it has grown to 1,833 events, 36,958 athletes, 227,270 races completed, with an ave number of 124 athletes per event and an ave 6.1 of runs per athlete 6.1 - in all over 1.1m km has been run across 32 locations in the UK - see http://parkrun.com/events.aspx for more details