| Halluin to Obernburg am Main | 273.24 mi (439.74 km) |
| Halluin to Obernkirchen | 277.11 mi (445.97 km) |
| Halluin to Oberschleissheim | 416.83 mi (670.82 km) |
| Halluin to Oberstdorf | 398.57 mi (641.43 km) |
| Halluin to Obertraubling | 421.41 mi (678.19 km) |
| Halluin to Obertshausen | 256.01 mi (412.01 km) |
| Halluin to Oberursel | 242.88 mi (390.88 km) |
| Halluin to Ochsenfurt | 316.58 mi (509.49 km) |
| Halluin to Ochsenhausen | 359.09 mi (577.89 km) |
| Halluin to Ochtrup | 200.52 mi (322.71 km) |
| Halluin to Odenthal | 174.71 mi (281.18 km) |
| Halluin to Oelde | 228.76 mi (368.15 km) |
| Halluin to Oelsnitz | 397.06 mi (639.01 km) |
| Halluin to Oer-Erkenschwick | 188.11 mi (302.74 km) |
| Halluin to Oerlinghausen | 252.50 mi (406.36 km) |
