The 2012 Olympic and Paralympic Games used a mixture of new venues, existing and historic facilities, and temporary facilities, some of them in well-known locations such as Hyde Park and Horse Guards Parade. After the Games, some of the new facilities will be reused in their Olympic form, while others will be resized or relocated.[38] The majority of venues have been divided into three zones within Greater London: the Olympic Zone, the River Zone and the Central Zone. In addition there are a few venues that, by necessity, are outside the boundaries of Greater London, such as the Weymouth and Portland National Sailing Academy some 125 miles (200 km) southwest of London, which hosted the sailing events. The football tournament was staged at several grounds around the UK.[39] Work began on the Park in December 2006, when a sports hall in Eton Manor was pulled down.[40] The athletes' village in Portland was completed in September 2011.[41] In November 2004, the 200-hectare (500-acre) Olympic Park plans were revealed.[42] The plans for the site were approved in September 2004 by Tower Hamlets, Newham, Hackney and Waltham Forest.[43] The redevelopment of the area to build the Olympic Park required compulsory purchase orders of property. The London Development Agency was in dispute with London and Continental Railways about the orders in November 2005. By May 2006, 86% of the land had been bought as businesses fought eviction.[44] Residents who opposed the eviction tried to find ways to stop it by setting up campaigns, but they had to leave as 94% of land was bought and the other 6% bought as a ?9 billion regeneration project started. There were some issues with the original venues not being challenging enough or being financially unviable. Both the Olympic road races and t

e mountain bike event were initially considered to be too easy, so they were eventually scheduled on new locations.[46][47] The Olympic marathon course, which was set to finish in the Olympic stadium, was moved to The Mall, since closing Tower Bridge was deemed to cause traffic problems in central London.[48] North Greenwich Arena 2 was scrapped in a cost-cutting exercise, Wembley Arena being used for badminton and rhythmic gymnastics events instead.[49][50][51][52] Test events were held throughout 2011 and 2012, either through an existing championship such as 2012 Wimbledon Championships or as a specially created event held under the banner of London Prepares. The 2012 Olympic Marathon Course is that of both the men's and women's marathon races at the 2012 Olympic and Paralympic Games in London. The 42.195-kilometre (26.219-mile) route consists of one short circuit of 3.571 kilometres (2.219 miles) followed by three circuits of 12.875 kilometres (8.0 miles). The course, which was designed to pass many of London's well-known landmarks, starts and finishes on The Mall, within sight of Buckingham Palace, and extends as far as the Tower of London in the east and the Victoria Memorial in the west. The route of the marathon had been changed, for various logistical reasons, from that originally envisaged in London's original 2005 bid for the Games and now breaks with the normal Olympic tradition that the race finishes inside the main Olympic Stadium. The 2012 Summer Olympics is the third to be held in London. The stated distance of the marathon at the London 1908 Summer Olympics 26 miles and 385 yards, later converted to metric units as 42.195 kilometres formed the basis of the standard distance adopted by International Association of Athletics Federations in 1921.