Arco is a commercial passenger train service operated in Spain by Renfe Operadora. Arco fully renovates and refurbishes Renfe's B11x-10200 series of passenger trains. New bogies, capable of working at 220 km/h, were added. The bogies are modified versions of model GC-1 by CAF, also known as GC-3, allowing a higher degree of comfort at higher speeds.
The Arco passenger trains work on the line Barcelona - Malaga - Sevilla - Badajoz - Almería- Granada, with the train known as Arco García Lorca; and since May 5, 2008, they also cover the line Basque Country - Galicia, known as Arco Camino de Santiago.
Until May 2, 2008, the trains were operating on the Mediterranean corridor, between Barcelona, Alicante and Murcia. There was also an Arco train service from Porbou / Cerbere (France) and Valencia Nord.
- Operated lines: Mediterranean Corridor Levante, Basque Country-Galicia
- Manufacturers: Renfe, CAF
- Units manufactured: 41
- Year established: 1999
- Top speed: 220 km/h
- Commercial Speed: 200 km/h
- Beam heating: Yes, 3 kV (CC)
- Gauge: 1,668 mm