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.
Competition record Representing 2004Asian Junior Championships Ipoh, Malaysia5th10,000 m43:33.73World Junior ChampionshipsGrosseto, Italy6th10,000 m41:14.612005World ChampionshipsHelsinki, Finland29th20 km1:27:08Universiadeİzmir, Turkey 3rd20 km1:25:182006World Race Walking CupA Coruña, Spain31st20 km1:24:44Asian GamesDoha, Qatar 3rd20 km1:23.172007World ChampionshipsOsaka, Japan11th20 km1:24:46UniversiadeBangkok, Thailand 3rd20 km1:25:102008Olympic GamesBeijing, China16th20 km1:21:572009World ChampionshipsBerlin, Germany11th20 km1:21:4818th50 km3:56:21East Asian GamesHong Kong2nd20 km1:26:472010World Race Walking CupChihuahua, Mexico20th20 km1:26:36Asian GamesGuangzhou, China 3rd50 km3:47:412011World ChampionshipsDaegu, South Korea6th50 km3:46:212012World Race Walking CupSaransk, Russia38th20 km1:24:44Olympic GamesLondon, United Kingdom9th50 km3:43:14
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