Nikkō Wakiōkan (日光脇往還) was established during the Edo period as a subroute to connect Hachiōji with Nikkō. The route stretches approximately 160 km (99 mi) and, at various points, is called the Nikkōdō. Because it is an alternate route to the Nikkō Kaidō, other names are Nikkō Wakikaidō, Nikkō Hinoban Kaidō, Sennindōshin Kaidō, Hachiōji Kaidō and Tatebayashidō.