| Radolfzell am Bodensee to Settimo Torinese | 188.51 mi (303.37 km) |
| Radolfzell am Bodensee to Seveso | 144.62 mi (232.75 km) |
| Radolfzell am Bodensee to Sezze | 475.37 mi (765.04 km) |
| Radolfzell am Bodensee to Siano | 556.07 mi (894.91 km) |
| Radolfzell am Bodensee to Siena | 325.77 mi (524.28 km) |
| Radolfzell am Bodensee to Signa | 291.62 mi (469.32 km) |
| Radolfzell am Bodensee to Silea | 213.34 mi (343.34 km) |
| Radolfzell am Bodensee to Silvi Paese | 437.10 mi (703.45 km) |
| Radolfzell am Bodensee to Sinalunga | 339.58 mi (546.50 km) |
| Radolfzell am Bodensee to Siniscola | 495.95 mi (798.16 km) |
| Radolfzell am Bodensee to Sinnai | 582.62 mi (937.64 km) |
| Radolfzell am Bodensee to Siracusa | 803.62 mi (1,293.30 km) |
| Radolfzell am Bodensee to Solaro | 146.47 mi (235.71 km) |
| Radolfzell am Bodensee to Soliera | 227.10 mi (365.48 km) |
| Radolfzell am Bodensee to Solofra | 558.16 mi (898.27 km) |
