The calculated distance (air line) between El Campello and Sant Joan d'Alacant is approximately 3 miles respectively 5 kilometers.
By car or train, the actual journey to Sant Joan d'Alacant is certainly longer, as only the direct route (as the crow flies) between El Campello and Sant Joan d'Alacant has been calculated here.
Air line (approximately)
5 kilometers
2 nautical miles