| Quattro Castella to Setubal | 1,082.55 mi (1,742.20 km) |
| Quattro Castella to Sever do Vouga | 991.25 mi (1,595.27 km) |
| Quattro Castella to Silves | 1,109.49 mi (1,785.55 km) |
| Quattro Castella to Sines | 1,100.92 mi (1,771.76 km) |
| Quattro Castella to Sintra | 1,096.98 mi (1,765.41 km) |
| Quattro Castella to Sobrado de Paiva | 978.80 mi (1,575.23 km) |
| Quattro Castella to Sobral de Monte Agraco | 1,078.70 mi (1,736.01 km) |
| Quattro Castella to Soure | 1,022.72 mi (1,645.92 km) |
| Quattro Castella to Tabua | 984.89 mi (1,585.03 km) |
| Quattro Castella to Tavira | 1,076.19 mi (1,731.96 km) |
| Quattro Castella to Tomar | 1,025.52 mi (1,650.42 km) |
| Quattro Castella to Tondela | 983.24 mi (1,582.38 km) |
| Quattro Castella to Torre de Moncorvo | 919.58 mi (1,479.91 km) |
| Quattro Castella to Torres Novas | 1,035.16 mi (1,665.93 km) |
| Quattro Castella to Torres Vedras | 1,082.11 mi (1,741.49 km) |
