The calculated distance (air line) between Shizuoka and Ōmihachiman is approximately 130 miles respectively 209 kilometers.
By car or train, the actual journey to Ōmihachiman is certainly longer, as only the direct route (as the crow flies) between Shizuoka and Ōmihachiman has been calculated here.
Air line (approximately)
209 kilometers
113 nautical miles