Madrid’s Cercanías C-3, C-4 and C-5 lines will face significant service changes from July 17 to 22. Essential works at Atocha will impact thousands of daily commuters. Further disruptions are planned through August.
Madrid’s Cercanías network is set for a week of major disruptions as critical works begin at Atocha Cercanías station. Starting July 17, the C-3, C-4 and C-5 lines will operate under altered schedules and routes, with changes expected to affect thousands of daily passengers. The works, aimed at implementing a new track layout to boost the Sol tunnel’s capacity by 33%, are scheduled to last until July 22, according to Cercanías.
During this period, the C-3 line (Aranjuez-Chamartín) will start and end its journey at Villaverde Bajo. Passengers needing to reach Atocha or Chamartín must transfer to C-4 trains. The C-4a branch (Parla-Alcobendas/San Sebastián de los Reyes) will be suspended between Atocha and Parla, with all trains on this route terminating at Atocha. Travelers heading towards Parla can switch to C-4b services (Parla-Colmenar Viejo), which will continue to run as usual.
For the C-5 line (Humanes-Móstoles El Soto), all trains will begin and end at Atocha. Those traveling towards Humanes, Fuenlabrada, or Móstoles El Soto will need to change trains at Atocha to continue their journey on the same line. These temporary arrangements are designed to keep the network moving while the most complex phase of the Atocha upgrade is underway.
Once this initial phase concludes, further changes are planned. From July 23 to August 16, only the C-5 line will be affected, with a complete closure between Villaverde Alto and Embajadores. During this time, trains between Humanes/Fuenlabrada and Villaverde Alto, as well as between Móstoles El Soto and Embajadores, will run every 10 minutes throughout the day. Additionally, shuttle trains will operate from Villaverde Alto to Méndez Álvaro, stopping at Puente Alcocer, Orcasitas, and Doce de Octubre, with a frequency of 35 minutes.
In August, from the 1st to the 28th, works will extend to lines C-2, C-7, C-8a, C-8b, and C-10, though only train frequencies will be affected. On the weekends of August 29–30 and September 5–6, the Sol tunnel will be closed between Atocha and Nuevos Ministerios, impacting C-3 and C-4 services. Temporary termini will be set up at Atocha for C-3 and C-4 trains, and at Nuevos Ministerios for C-4 trains. Renfe will keep passengers informed through station staff, announcements, signage, social media, and WhatsApp updates.
The timing of these works coincides with the summer period, when passenger numbers are typically lower, in an effort to minimize inconvenience. According to Cercanías, these are the final works related to the Sol tunnel that will disrupt regular service. The scale of the changes echoes the kind of citywide impact seen in other major Spanish transport stories, such as the ongoing challenges with tourist accommodation in Barcelona, highlighted in recent coverage of the city’s struggle with rising tourist apartment numbers.
Cercanías Madrid is one of Spain’s busiest commuter rail networks, serving millions of passengers each month. Atocha Cercanías is a central hub, connecting southern and northern suburbs with the city center. The Sol tunnel is a critical artery for cross-city travel, and any works affecting this section have a ripple effect across the network. The current upgrades are expected to improve reliability and allow for more flexible operations during incidents, ultimately benefiting commuters in the long term. However, the coming weeks will require careful planning for anyone relying on these lines, as alternative routes and transfer points become essential for daily travel.
