She ran at the Yokohama Women's Marathon in February 2011 and broke the course record with a time of 2:23:56, gaining herself a place in the Japanese World Championship squad in the process. However, at the 2011 World Championships in Athletics in Daegu she did not produce the same form and finished 18th with a time of 2:32:31 hours. She returned to the Yokohama women's race in November but was defeated by the less well-known Ryoko Kizaki in the final stretch. She secured a place on the Olympic team with a strong performance of 2:24:14 hours at the Nagoya Marathon, where she was the first Japanese and runner-up behind Albina Mayorova. She placed 19th at the 2012 Olympic marathon.