 The course in this movie, Irohazaka, is located near Nikkoh in  Tochigi prefecture. It has two different roads; one going uphill and  one going downhill. Irohazaka got its name because in the ancient  Japanese days, it was a mountain trade route. "I, Ro, Ha" are the  first three letters of the old Japanese alphabet, given as a joke to  the routes many corners. Every corner is named after a Japanese  letter. If you watch closely, youll see that every corner has a  blue sign with a different Japanese letter.