| Romanshorn to Solofra | 538.46 mi (866.56 km) |
| Romanshorn to Somma Lombardo | 133.59 mi (214.99 km) |
| Romanshorn to Somma Vesuviana | 526.04 mi (846.58 km) |
| Romanshorn to Sommacampagna | 165.51 mi (266.36 km) |
| Romanshorn to Sona | 163.08 mi (262.45 km) |
| Romanshorn to Sondrio | 99.31 mi (159.83 km) |
| Romanshorn to Sora | 454.87 mi (732.04 km) |
| Romanshorn to Sorbolo | 194.86 mi (313.60 km) |
| Romanshorn to Soresina | 159.12 mi (256.08 km) |
| Romanshorn to Sorisole | 126.96 mi (204.33 km) |
| Romanshorn to Sorrento | 539.74 mi (868.62 km) |
| Romanshorn to Sorso | 469.01 mi (754.81 km) |
| Romanshorn to Sortino | 774.07 mi (1,245.74 km) |
| Romanshorn to Soverato Marina | 712.06 mi (1,145.94 km) |
| Romanshorn to Sovicille | 309.40 mi (497.93 km) |
