This is one of the leading cycling events in Japan with over 3,000 participants. There are five courses to satisfy everyone from beginners to experts. Course A, which has the largest number of participants and the longest distance of 210 km, almost circles Sado Island. While enjoying the spectacular scenery along the coast, participants will tackle a highly challenging course with continuous ups and downs. In addition, an S Course has been newly established for super-advanced runners, which runs on a partially mountainous course. The warm support of the people of Sado Island and the unique delicacies of Sado Island served at aid stations are also part of the event's charm.