Sport of athletics athletics tracks for ease of measurement, and the 1908 Summer Olympics in London saw the introduction of the 3500-metre and 10-mile walks. Racewalking was briefly dropped from the Olympic programme in 1928, but the men's 50 kilometres race walk has been held at every Olympic Games but one since 1932. The men's 20 kilometres race walk was added to the Olympic athletics schedule in 1956 and the women's event was first held in 1992. The most common events in modern competition are over 10 km, 20 km and 50 km on roads, although women's 3 km and men's 5 km
2011 World Championships in Athletics – Men's 20 kilometres walk 2011 World Championships in Athletics – Men's 20 kilometres walk ] The Men's 20 kilometres walk event at the 2011 World Championships in Athletics was held on August 28 on a loop course starting and finishing at Gukchae - bosang Memorial Park in the center of Daegu. Forty-six men started the competition and 27 countries were represented. Valeriy Borchin entered as the reigning world and 2008 Olympic champion. The athletes on the Chinese and Russian teams led the rankings that year: Wang Zhen and Chu Yafei were the top two, while Borchin, world record holder Vladimir Kanaykin, and Sergey Morozov