Iberian-gauge railways

Ferrocarrils de la Generalitat de Catalunya

1668 mm track gauge

Madrid–Barcelona railway

Lleida–La Pobla Line

North railway line

Valencia−Tarragona railway

Linha do Sul

Douro railway line

Madrid–Hendaya railway line

Barcelona–Girona–Portbou railway

Cascais railway

Sintra Line

Linha do Algarve

Castejón–Bilbao railway

León–A Coruña railway

Ramal de Neves-Corvo

Venta de Baños-Gijón railway line

Linha do Oeste

Linha da Beira Baixa

Ramal de Montemor

Guimarães railway line

Ramal da Figueira da Foz

Zafra-Huelva railway line

Leixões railway line

Minho railway line

Ramal do Louriçal

Linha de Sines

Linha de Évora

Ramal de Sines

Linares Baeza–Almería railway

Ramal de Portalegre

Ramal de Alfarelos

Linha de Cintura

Ramal de Reguengos

Ramal de Tomar

Ramal de Cáceres

Ramal de Braga

Ramal da Lousã

Linha da Matinha

Ramal de Aljustrel

Linha do Leste

Alentejo's railway

Ramal Internacional de Valença

Ramal do Montijo

Ramal de Moura

Ramal de Mora

Linha de Vendas Novas

Linha da Beira Alta