| Billerbeck to Obernburg am Main | 168.26 mi (270.79 km) |
| Billerbeck to Obernkirchen | 79.83 mi (128.47 km) |
| Billerbeck to Oberschleissheim | 319.58 mi (514.32 km) |
| Billerbeck to Oberstdorf | 342.66 mi (551.46 km) |
| Billerbeck to Obertraubling | 298.62 mi (480.58 km) |
| Billerbeck to Obertshausen | 148.08 mi (238.32 km) |
| Billerbeck to Oberursel | 134.72 mi (216.81 km) |
| Billerbeck to Ochsenfurt | 201.31 mi (323.98 km) |
| Billerbeck to Ochsenhausen | 294.47 mi (473.90 km) |
| Billerbeck to Ochtrup | 16.26 mi (26.17 km) |
| Billerbeck to Odenthal | 65.80 mi (105.90 km) |
| Billerbeck to Oelde | 37.81 mi (60.86 km) |
| Billerbeck to Oelsnitz | 236.88 mi (381.22 km) |
| Billerbeck to Oer-Erkenschwick | 23.36 mi (37.60 km) |
| Billerbeck to Oerlinghausen | 58.39 mi (93.97 km) |
