| Boppard to Somma Lombardo | 318.40 mi (512.41 km) |
| Boppard to Somma Vesuviana | 725.80 mi (1,168.06 km) |
| Boppard to Sommacampagna | 366.38 mi (589.63 km) |
| Boppard to Sona | 363.95 mi (585.72 km) |
| Boppard to Sondrio | 299.58 mi (482.14 km) |
| Boppard to Sora | 655.09 mi (1,054.27 km) |
| Boppard to Sorbolo | 395.15 mi (635.94 km) |
| Boppard to Soresina | 357.46 mi (575.28 km) |
| Boppard to Sorisole | 324.83 mi (522.76 km) |
| Boppard to Sorrento | 739.84 mi (1,190.65 km) |
| Boppard to Sorso | 653.50 mi (1,051.70 km) |
| Boppard to Sortino | 975.05 mi (1,569.18 km) |
| Boppard to Soverato Marina | 910.54 mi (1,465.38 km) |
| Boppard to Sovicille | 509.93 mi (820.65 km) |
| Boppard to Spello | 555.18 mi (893.47 km) |
