The calculated distance (air line) between Santiago de la Ribera and La Manga del Mar Menor is approximately 12 miles respectively 19 kilometers.
By car or train, the actual journey to La Manga del Mar Menor is certainly longer, as only the direct route (as the crow flies) between Santiago de la Ribera and La Manga del Mar Menor has been calculated here.
Air line (approximately)
19 kilometers
10 nautical miles