Some of us like to go full throttle all the way while others seek feats of endurance...If you're looking for ultras to fill your calendar with, Japan has a wide variety to choose from. That is, if you know where to look.
For those seeking to go the extra mile(s), here are three ultra-distance road and trail races worth taking a look at this spring:
Yokosuka Miura Michikusa Ultra Marathon (Kanagawa) | May 27
General Entry: until Mar 21 (closes once full)