The calculated distance (air line) between Ōmamachō-ōmama and Hachiōji is approximately 54 miles respectively 86 kilometers.
By car or train, the actual journey to Hachiōji is certainly longer, as only the direct route (as the crow flies) between Ōmamachō-ōmama and Hachiōji has been calculated here.
Air line (approximately)
86 kilometers
47 nautical miles