Ryoko Kizaki

Ryoko Kizaki (Japanese: 木崎 良子; born 21 June 1985) is a Japanese long-distance runner who competes in marathon and half marathon races. She won the 2011 Yokohama Women's Marathon in a personal best time of 2:26:32 hours. She is a three-time participant at the IAAF World Half Marathon Championships and a two-time medallist at the Summer Universiade.