| Alenquer to Solofra | 1,266.36 mi (2,038.00 km) |
| Alenquer to Somma Lombardo | 1,010.88 mi (1,626.85 km) |
| Alenquer to Somma Vesuviana | 1,244.68 mi (2,003.12 km) |
| Alenquer to Sommacampagna | 1,103.33 mi (1,775.63 km) |
| Alenquer to Sona | 1,103.20 mi (1,775.43 km) |
| Alenquer to Sondrio | 1,075.33 mi (1,730.58 km) |
| Alenquer to Sora | 1,201.79 mi (1,934.09 km) |
| Alenquer to Sorbolo | 1,074.11 mi (1,728.62 km) |
| Alenquer to Soresina | 1,054.91 mi (1,697.71 km) |
| Alenquer to Sorisole | 1,055.52 mi (1,698.70 km) |
| Alenquer to Sorrento | 1,242.03 mi (1,998.86 km) |
| Alenquer to Sorso | 938.43 mi (1,510.26 km) |
| Alenquer to Sortino | 1,310.11 mi (2,108.42 km) |
| Alenquer to Soverato Marina | 1,371.09 mi (2,206.55 km) |
| Alenquer to Sovicille | 1,090.06 mi (1,754.29 km) |
