| Monte Porzio Catone to Setubal | 1,160.08 mi (1,866.97 km) |
| Monte Porzio Catone to Sever do Vouga | 1,094.60 mi (1,761.59 km) |
| Monte Porzio Catone to Silves | 1,168.94 mi (1,881.22 km) |
| Monte Porzio Catone to Sines | 1,171.49 mi (1,885.32 km) |
| Monte Porzio Catone to Sintra | 1,179.79 mi (1,898.68 km) |
| Monte Porzio Catone to Sobrado de Paiva | 1,085.75 mi (1,747.34 km) |
| Monte Porzio Catone to Sobral de Monte Agraco | 1,163.24 mi (1,872.05 km) |
| Monte Porzio Catone to Soure | 1,118.18 mi (1,799.54 km) |
| Monte Porzio Catone to Tabua | 1,082.37 mi (1,741.91 km) |
| Monte Porzio Catone to Tavira | 1,130.73 mi (1,819.74 km) |
| Monte Porzio Catone to Tomar | 1,114.53 mi (1,793.67 km) |
| Monte Porzio Catone to Tondela | 1,082.94 mi (1,742.82 km) |
| Monte Porzio Catone to Torre de Moncorvo | 1,025.66 mi (1,650.64 km) |
| Monte Porzio Catone to Torres Novas | 1,122.91 mi (1,807.15 km) |
| Monte Porzio Catone to Torres Vedras | 1,167.86 mi (1,879.49 km) |
