In August 2008 he finished fourth in the 20 km race walk event at the 2008 Summer Olympics, in a new personal best time of 1:19:47 hours.

The previous record of 39:57 minutes was set by Aleksey Bartsaykin of Russia earlier in 2008.

[2] On August 15, 2009, he won the silver medal at the 20 kilometres walk in the 2009 World Championships in Berlin, setting a personal best of 1:19:06 in the process.

By winning silver in the 20 km walk, Wang Hao became China's third ever male athlete to win a medal in the history of the IAAF World Championships, after former men's high jump world record holder Zhu Jianhua, who won bronze in the 1983 World Championships, and hurdler Liu Xiang, who won a bronze in 2003, silver in 2005 and gold in 2007.

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