| South Portland to Roermond | 3,441.27 mi (5,538.19 km) |
| South Portland to Roosendaal | 3,371.35 mi (5,425.66 km) |
| South Portland to Rosmalen | 3,403.04 mi (5,476.66 km) |
| South Portland to Rotterdam | 3,363.54 mi (5,413.09 km) |
| South Portland to Rozenburg | 3,353.84 mi (5,397.49 km) |
| South Portland to Rucphen | 3,376.66 mi (5,434.22 km) |
| South Portland to s-Gravendeel | 3,371.57 mi (5,426.01 km) |
| South Portland to s-Gravenzande | 3,348.22 mi (5,388.45 km) |
| South Portland to s-Heerenberg | 3,433.55 mi (5,525.76 km) |
| South Portland to s-Hertogenbosch | 3,401.27 mi (5,473.81 km) |
| South Portland to Sassenheim | 3,356.62 mi (5,401.95 km) |
| South Portland to Schaesberg | 3,450.75 mi (5,553.44 km) |
| South Portland to Schagen | 3,353.58 mi (5,397.06 km) |
| South Portland to Scherpenzeel | 3,397.45 mi (5,467.66 km) |
| South Portland to Scheveningen | 3,349.72 mi (5,390.86 km) |
