| Montemor-o-Velho to Sestao | 364.38 mi (586.42 km) |
| Montemor-o-Velho to Sevilla | 248.93 mi (400.61 km) |
| Montemor-o-Velho to Sevilla La Nueva | 245.73 mi (395.46 km) |
| Montemor-o-Velho to Silla | 442.73 mi (712.50 km) |
| Montemor-o-Velho to Silleda | 176.58 mi (284.18 km) |
| Montemor-o-Velho to Sitges | 553.93 mi (891.47 km) |
| Montemor-o-Velho to Socuellamos | 318.63 mi (512.79 km) |
| Montemor-o-Velho to Soller | 603.02 mi (970.46 km) |
| Montemor-o-Velho to Solsona | 545.72 mi (878.26 km) |
| Montemor-o-Velho to Son Servera | 639.05 mi (1,028.45 km) |
| Montemor-o-Velho to Sonseca | 252.80 mi (406.85 km) |
| Montemor-o-Velho to Sopelana | 368.26 mi (592.66 km) |
| Montemor-o-Velho to Soria | 342.56 mi (551.29 km) |
| Montemor-o-Velho to Suances | 328.37 mi (528.46 km) |
| Montemor-o-Velho to Sueca | 449.94 mi (724.11 km) |
