Valencia is the largest container port on Spain's Mediterranean coast and a major transshipment hub in its own right, serving both cargo destined for Spain directly and cargo transferring onward to other Mediterranean and North African ports. Its position on the main Asia–Europe trunk route gives it comparatively dense sailing frequency for a southern European port.
For cargo bound for Madrid and central Spain, Valencia generally offers the shortest inland leg of the available gateway options; for northern Spain, routing via a Bay of Biscay or northern European port with a shorter inland run can sometimes compete, depending on the specific delivery location.
Portugal-bound cargo is occasionally routed via Valencia or directly to a Portuguese port depending on carrier coverage — Portugal has its own deep-sea gateways (notably Sines), and whether routing via Spain or direct is faster depends again on the carrier string actually calling that week.
Spanish customs follows standard EU entry procedure. As with the other southern European gateways, the choice between a direct Mediterranean call and a northern-Europe-plus-inland routing is a transit-time comparison we run against the actual delivery point rather than a fixed rule.