The line links Valencia to Tarragona and onward to Barcelona, following the Mediterranean coast and serving major cities and towns along the coast including Sagunto, Castellón de la Plana, Tortosa and Tarragona.

In January 2018, the Valencia–Castellón section was rebuilt with a third rail to dual gauge at a cost of €355 million, allowing standard gauge AVE high-speed rail services to run from Castellón to Madrid via Valencia.

[1] A new built 46·5 km cut-off section between Camp de Tarragona and Vandellòs bypassing the last remaining section of single track on the Mediterranean corridor west of Tarragona, started commercial services on January 13, 2020.

The new section leads to a triangular junction with the Madrid–Barcelona high-speed rail line just west of Camp de Tarragona station.

A high speed medium distance Avant service from Tortosa to Barcelona-Sants, calling at L'Aldea, L'Hospitalet de l'Infant, Cambrils and Camp de Tarragona was introduced in February 2020.