→León avoiding line: Sahagún (Bif. Rio Bernesga) – La Robla (Bif. Torneros) [C - D]: not open as at June 2019
This curve avoiding Guillarei enables trains to run direct between Vigo and Tui without reversing. It is used by the twice daily through ''Trencelta'' services between Vigo and Porto Campanha, which run non-stop between Vigo and Valença do Minho. Regional Express services between Vigo and Valença do Minho do not use this curve as they reverse at Guillarei.
=== León avoiding line: Sahagún (Bif. Rio Bernesga) – La Robla (Bif. Torneros) [C - D] ===
This curve is used by the following trains, which do not call at León.
'''Note''' that the new through station at León may open
in the first half of 2019. This will almost certainly result in all trains, even those not calling at León, running via the station and this curve consequently losing its trains.