| South Portland to Schiedam | 3,359.57 mi (5,406.71 km) |
| South Portland to Schijndel | 3,408.30 mi (5,485.13 km) |
| South Portland to Schinnen | 3,444.05 mi (5,542.66 km) |
| South Portland to Schoonhoven | 3,376.54 mi (5,434.02 km) |
| South Portland to Simpelveld | 3,451.23 mi (5,554.22 km) |
| South Portland to Sint Anthonis | 3,425.81 mi (5,513.31 km) |
| South Portland to Sint Willebrord | 3,376.56 mi (5,434.05 km) |
| South Portland to Sint-Michielsgestel | 3,404.64 mi (5,479.24 km) |
| South Portland to Sint-Oedenrode | 3,410.79 mi (5,489.13 km) |
| South Portland to Sittard | 3,442.03 mi (5,539.41 km) |
| South Portland to Sliedrecht | 3,376.66 mi (5,434.21 km) |
| South Portland to Slochteren | 3,420.01 mi (5,503.97 km) |
| South Portland to Sluis | 3,334.47 mi (5,366.31 km) |
| South Portland to Sneek | 3,380.76 mi (5,440.81 km) |
| South Portland to Soest | 3,388.31 mi (5,452.96 km) |
