| Romanshorn to Senftenberg | 343.75 mi (553.21 km) |
| Romanshorn to Siegburg | 243.89 mi (392.50 km) |
| Romanshorn to Siegen | 237.20 mi (381.73 km) |
| Romanshorn to Sigmaringen | 36.73 mi (59.11 km) |
| Romanshorn to Simbach am Inn | 176.31 mi (283.74 km) |
| Romanshorn to Simmerath | 251.25 mi (404.35 km) |
| Romanshorn to Sindelfingen | 81.10 mi (130.52 km) |
| Romanshorn to Sinsheim | 118.53 mi (190.75 km) |
| Romanshorn to Sinzheim | 99.30 mi (159.81 km) |
| Romanshorn to Sinzig | 226.97 mi (365.27 km) |
| Romanshorn to Soest | 282.47 mi (454.59 km) |
| Romanshorn to Solingen | 269.11 mi (433.10 km) |
| Romanshorn to Soltau | 375.06 mi (603.60 km) |
| Romanshorn to Sommerda | 260.91 mi (419.89 km) |
| Romanshorn to Sondershausen | 271.37 mi (436.73 km) |
