| Sint-Martens-Lennik to Sestao | 616.78 mi (992.61 km) |
| Sint-Martens-Lennik to Sevilla | 1,061.49 mi (1,708.31 km) |
| Sint-Martens-Lennik to Sevilla La Nueva | 822.26 mi (1,323.29 km) |
| Sint-Martens-Lennik to Silla | 820.61 mi (1,320.65 km) |
| Sint-Martens-Lennik to Silleda | 808.50 mi (1,301.15 km) |
| Sint-Martens-Lennik to Sitges | 670.38 mi (1,078.86 km) |
| Sint-Martens-Lennik to Socuellamos | 863.35 mi (1,389.43 km) |
| Sint-Martens-Lennik to Soller | 765.54 mi (1,232.01 km) |
| Sint-Martens-Lennik to Solsona | 621.09 mi (999.55 km) |
| Sint-Martens-Lennik to Son Servera | 773.35 mi (1,244.59 km) |
| Sint-Martens-Lennik to Sonseca | 861.00 mi (1,385.65 km) |
| Sint-Martens-Lennik to Sopelana | 611.90 mi (984.76 km) |
| Sint-Martens-Lennik to Soria | 698.88 mi (1,124.73 km) |
| Sint-Martens-Lennik to Suances | 637.70 mi (1,026.29 km) |
| Sint-Martens-Lennik to Sueca | 830.02 mi (1,335.78 km) |
