→Madrid Puerta de Atocha – Atocha cambiador de ancho AND Vicálvaro – Vicálvaro Clasificacion – O'Donnell: routing confirmed
'''Note''' that this route is almost certainly '''not''' being used whilst engineering work takes place in the Recoletos tunnels in central Madrid from 2 June until probably the end of November 2019. Use will cease permanently when the third (1435 mm gauge) tunnel is opened.
=== Madrid Puerta de Atocha – Atocha ''cambiador de ancho'' ''AND'' Vicálvaro – Vicálvaro Clasificacion – O'Donnell ===
(ERA 23B5) ES19/31A
These links provide access between Madrid Puerta de Atocha and Madrid Chamartín via the line avoiding the city on the east side.
This route is
'''probably''' being used by through ''Alvia'' services between Valladolid and the south of Spain whilst engineering work takes place in the Recoletos tunnels in central Madrid from 2 June until probably the end of November 2019. '''The compilers would greatly appreciate confirmation of this routing.'''
===Delicias – Bif. Museo – Madrid Santa Catalina – Villaverde Bajo – San Cristóbal Industrial ===