| Potomac to Schiedam | 3,838.76 mi (6,177.89 km) |
| Potomac to Schijndel | 3,887.48 mi (6,256.29 km) |
| Potomac to Schinnen | 3,923.03 mi (6,313.51 km) |
| Potomac to Schoonhoven | 3,855.77 mi (6,205.27 km) |
| Potomac to Simpelveld | 3,930.18 mi (6,325.01 km) |
| Potomac to Sint Anthonis | 3,905.02 mi (6,284.52 km) |
| Potomac to Sint Willebrord | 3,855.65 mi (6,205.06 km) |
| Potomac to Sint-Michielsgestel | 3,883.82 mi (6,250.40 km) |
| Potomac to Sint-Oedenrode | 3,889.95 mi (6,260.27 km) |
| Potomac to Sittard | 3,921.03 mi (6,310.28 km) |
| Potomac to Sliedrecht | 3,855.85 mi (6,205.39 km) |
| Potomac to Slochteren | 3,899.40 mi (6,275.47 km) |
| Potomac to Sluis | 3,813.33 mi (6,136.97 km) |
| Potomac to Sneek | 3,860.17 mi (6,212.34 km) |
| Potomac to Soest | 3,867.62 mi (6,224.33 km) |
