| Radolfzell am Bodensee to Octeville | 500.91 mi (806.13 km) |
| Radolfzell am Bodensee to Oignies | 329.60 mi (530.44 km) |
| Radolfzell am Bodensee to Oissel | 376.83 mi (606.45 km) |
| Radolfzell am Bodensee to Olivet | 327.97 mi (527.81 km) |
| Radolfzell am Bodensee to Ollioules | 351.53 mi (565.73 km) |
| Radolfzell am Bodensee to Olonne-sur-Mer | 511.08 mi (822.51 km) |
| Radolfzell am Bodensee to Oloron-Sainte-Marie | 559.34 mi (900.18 km) |
| Radolfzell am Bodensee to Onet Village | 383.90 mi (617.82 km) |
| Radolfzell am Bodensee to Onnaing | 304.37 mi (489.83 km) |
| Radolfzell am Bodensee to Orange | 318.64 mi (512.81 km) |
| Radolfzell am Bodensee to Orchies | 320.60 mi (515.96 km) |
| Radolfzell am Bodensee to Orleans | 327.54 mi (527.12 km) |
| Radolfzell am Bodensee to Orly | 310.36 mi (499.48 km) |
| Radolfzell am Bodensee to Ormesson-sur-Marne | 304.41 mi (489.90 km) |
| Radolfzell am Bodensee to Orsay | 319.03 mi (513.43 km) |
