The is an annual marathon road race for women over the classic distance of 42.195 kilometres which is held on the 4th or 5th Sunday of January in the city of Osaka, Japan, and hosted by Japan Association of Athletics Federations, Kansai Telecasting Corporation, the Sankei Shimbun, Sankei Sports, Radio Osaka and Osaka City.
Марафон проходит при поддержке Японской ассоциации легкоатлетических федераций (日本陸上競技連盟), Kansai Telecasting Corporation 関西テレビ放送株式会社), Sankei Shimbun Co., Ltd. (株式会社産業経済新聞社, the Sankei Shimbun), Sankei Sports (サンケイスポーツ), Osaka Broadcasting Corporation (大阪放送株式会社, Radio Osaka) и Osaka City (大阪市?).