The calculated distance (air line) between Ōnojō and Setakamachi-takayanagi is approximately 27 miles respectively 43 kilometers.
By car or train, the actual journey to Setakamachi-takayanagi is certainly longer, as only the direct route (as the crow flies) between Ōnojō and Setakamachi-takayanagi has been calculated here.
Air line (approximately)
43 kilometers
23 nautical miles