| Radolfzell am Bodensee to Oegstgeest | 366.65 mi (590.06 km) |
| Radolfzell am Bodensee to Oirschot | 307.60 mi (495.04 km) |
| Radolfzell am Bodensee to Oisterwijk | 314.78 mi (506.58 km) |
| Radolfzell am Bodensee to Oldebroek | 353.03 mi (568.14 km) |
| Radolfzell am Bodensee to Oldenzaal | 329.26 mi (529.89 km) |
| Radolfzell am Bodensee to Ommen | 349.21 mi (562.00 km) |
| Radolfzell am Bodensee to Oosterend | 385.84 mi (620.95 km) |
| Radolfzell am Bodensee to Oosterhout | 326.57 mi (525.56 km) |
| Radolfzell am Bodensee to Oosterwolde | 381.81 mi (614.47 km) |
| Radolfzell am Bodensee to Oostzaan | 371.65 mi (598.12 km) |
| Radolfzell am Bodensee to Opmeer | 386.25 mi (621.60 km) |
| Radolfzell am Bodensee to Oss | 318.32 mi (512.29 km) |
| Radolfzell am Bodensee to Oud-Beijerland | 347.87 mi (559.85 km) |
| Radolfzell am Bodensee to Oudenbosch | 332.22 mi (534.66 km) |
| Radolfzell am Bodensee to Oudewater | 347.60 mi (559.42 km) |
