The calculated distance (air line) between Sant Martí and Grao de Murviedro is approximately 177 miles respectively 285 kilometers.
By car or train, the actual journey to Grao de Murviedro is certainly longer, as only the direct route (as the crow flies) between Sant Martí and Grao de Murviedro has been calculated here.
Air line (approximately)
285 kilometers
154 nautical miles