Ninin−Sankyaku(Three-legged race)

Ninin−Sankyaku(Three-legged race), two runner runs to suit the tone knot, such as the ankle cord inside is competition (from Wikipedia).

There are variations in various ways you can compete in two or more sets, and or compete in a relay format.

The history seems to have been included in the discipline at the time of Japan's first Japanese athletic meet was held at Naval Academy in 1874.