The calculated distance (air line) between Italy and San Marino is approximately 143 miles respectively 230 kilometers.
By car or train, the actual journey to San Marino is certainly longer, as only the direct route (as the crow flies) between Italy and San Marino has been calculated here.
The center of the country is used to calculate the distance. For a more precise determination of the distance, please use one (or better yet two) cities for the distance calculation.
Air line (approximately)
230 kilometers
124 nautical miles