Following the day of the last day of my exhibition in a public bathhouse, I was scheduled to take part in another exhibition. Coincidentally a bath was planned to be exhibited as an artwork at the site and the distance between the former exhibition place and the later one was about 42 km. Therefore I came up with the idea to connect those bathes by running. Furo (風呂 lit. bath in Japanese) is pun for "full" marathon.