The calculated distance (air line) between Spassk-Ryazanskiy and Ryazan’ is approximately 31 miles respectively 50 kilometers.
By car or train, the actual journey to Ryazan’ is certainly longer, as only the direct route (as the crow flies) between Spassk-Ryazanskiy and Ryazan’ has been calculated here.
Air line (approximately)
50 kilometers
27 nautical miles