| Hilsea to Oberkirch | 438.53 mi (705.74 km) |
| Hilsea to Obernburg am Main | 455.13 mi (732.46 km) |
| Hilsea to Obernkirchen | 448.43 mi (721.68 km) |
| Hilsea to Oberschleissheim | 593.09 mi (954.48 km) |
| Hilsea to Oberstdorf | 564.22 mi (908.03 km) |
| Hilsea to Obertraubling | 602.16 mi (969.09 km) |
| Hilsea to Obertshausen | 438.56 mi (705.79 km) |
| Hilsea to Oberursel | 425.72 mi (685.13 km) |
| Hilsea to Ochsenfurt | 498.34 mi (802.01 km) |
| Hilsea to Ochsenhausen | 529.68 mi (852.44 km) |
| Hilsea to Ochtrup | 367.42 mi (591.30 km) |
| Hilsea to Odenthal | 356.59 mi (573.88 km) |
| Hilsea to Oelde | 403.73 mi (649.75 km) |
| Hilsea to Oelsnitz | 580.14 mi (933.64 km) |
| Hilsea to Oer-Erkenschwick | 364.10 mi (585.96 km) |
