The calculated distance (air line) between San Martino Buon Albergo and Rimini is approximately 119 miles respectively 191 kilometers.
By car or train, the actual journey to Rimini is certainly longer, as only the direct route (as the crow flies) between San Martino Buon Albergo and Rimini has been calculated here.
Air line (approximately)
191 kilometers
103 nautical miles