Kōichirō Morioka (森岡 紘一朗, Morioka Kōichirō; born 2 April 1985) is a Japanese race walker. He has enjoyed success at University and regional levels, having won two bronze medals at both the Summer Universiade (2005, 2007) and the Asian Games (2006, 2010). Morioka has competed at the four World Championships in Athletics (2005 to 2011) and has represented Japan at three Summer Olympics (2008, 2012, 2016). He also won a silver medal at the 2009 East Asian Games. He walked an Asian record of 39:07.84 minutes for the 10,000 km track walk in 2010, which was broken two years later by Wang Zhen. He also set a new personal best at the 2012 Summer Olympics.
Source: “Kōichirō Morioka”, English Wikipedia (CC BY-SA 4.0), excerpt