Hiromu Inada is by no means your average 86-year-old.

Inada is the oldest triathlete to complete what many consider to be the most difficult race in the world — the ironman triathlon — at the world championships. But with his steely resolve, the Japanese senior aims to keep proving he can move mountains and that age cannot stop him from achieving what his heart pushes him to do.

While the standard, Olympic-distance triathlon race consists of a 1.5-km swim, a 40-km ride and a 10-km run, the ironman requires competitors to complete a race more than three times as long under a given time limit.