BMX Bike Ride Live Wallpaper

小轮车比赛开始于20世纪70年代初时，一些青少年在美国加利福尼亚州，

BMX racing began in the early 1970s when some teenagers in California, USA, used their bicycles to imitate cross-country motorcycle riders.

By the mid-70s, new bikes that were tough, that could be twisted, turned and bumped without falling apart were being made. The first organised BMX racing events were held in 1975.

Trail riders perform tricks in the air between jumps

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BMX riding tricks are performed in streets and parks on a variety of ramps, rails, walls and other obstacles.

This form of BMX riding is known as street BMX riding.

BMX (bicycle motoross) was part of the cycling program at the 2008 Olympic Games in Beijing, China. There was to be an individual event for both men and women. In Olympic competition, races were held on circuits of around 350 metres, including jumps, banked corners and other obstacles.

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