Sumie Inagaki

is a Japanese ultramarathon runner from Hokkaido. Inagaki holds current women's world record in 24-hour run Indoor (, Espoo FIN, Jan 2011), and in 48-hour run Track (, Surgeres FRA, May 2010). She was the female winner of 2006 and 2009 Spartathlon, and the female winner of 2011 and 2012 Badwater Ultramarathon.

Competition record

International competitions

Non-championship races 2014 1st place in 24-hour run Finland (240.6 km) 1st place in 48-hour run France (397.1 km) 2013 1st place in 24-hour run Finland (220.7 km) 3rd place among women in Soochow International Ultramarathon (221.555 km) 2011 1st place in 24-hour Indoor run Finland, setting the world record of 240.631 km 2010 1st place in 24-hour run Finland

Inagaki states that ultramarathon is not her job, but what she loves to do, where she finds the joy of life. "What I do is a fun run. I train as if I were having a picnic."