The race has a one hour early start option and aid stations every 2.5 kms.
Course records, both set in 2013:
Men Women
Yasutoshi Oshima 07:31:03h Megan Anderson 07:50:31h
This will be the third edition of the race and in 2014 there were over 500 participants.
Website: Shibamata 100 km
Megan Anderson’s race report
From Multidays.com, post Shibamata 100 km 2015