| Monte Porzio Catone to Sestao | 805.50 mi (1,296.33 km) |
| Monte Porzio Catone to Sevilla | 1,043.38 mi (1,679.16 km) |
| Monte Porzio Catone to Sevilla La Nueva | 876.57 mi (1,410.71 km) |
| Monte Porzio Catone to Silla | 708.55 mi (1,140.31 km) |
| Monte Porzio Catone to Silleda | 1,070.32 mi (1,722.51 km) |
| Monte Porzio Catone to Sitges | 565.53 mi (910.13 km) |
| Monte Porzio Catone to Socuellamos | 831.48 mi (1,338.13 km) |
| Monte Porzio Catone to Soller | 542.42 mi (872.93 km) |
| Monte Porzio Catone to Solsona | 575.60 mi (926.33 km) |
| Monte Porzio Catone to Son Servera | 512.62 mi (824.99 km) |
| Monte Porzio Catone to Sonseca | 882.99 mi (1,421.03 km) |
| Monte Porzio Catone to Sopelana | 804.36 mi (1,294.49 km) |
| Monte Porzio Catone to Soria | 781.15 mi (1,257.13 km) |
| Monte Porzio Catone to Suances | 858.20 mi (1,381.14 km) |
| Monte Porzio Catone to Sueca | 707.02 mi (1,137.84 km) |
