| Clacton-on-Sea to Oberkirch | 380.50 mi (612.35 km) |
| Clacton-on-Sea to Obernburg am Main | 373.95 mi (601.81 km) |
| Clacton-on-Sea to Obernkirchen | 340.31 mi (547.67 km) |
| Clacton-on-Sea to Oberschleissheim | 522.68 mi (841.18 km) |
| Clacton-on-Sea to Oberstdorf | 508.26 mi (817.96 km) |
| Clacton-on-Sea to Obertraubling | 522.74 mi (841.26 km) |
| Clacton-on-Sea to Obertshausen | 355.16 mi (571.57 km) |
| Clacton-on-Sea to Oberursel | 341.09 mi (548.92 km) |
| Clacton-on-Sea to Ochsenfurt | 417.01 mi (671.11 km) |
| Clacton-on-Sea to Ochsenhausen | 467.82 mi (752.88 km) |
| Clacton-on-Sea to Ochtrup | 258.64 mi (416.24 km) |
| Clacton-on-Sea to Odenthal | 262.52 mi (422.48 km) |
| Clacton-on-Sea to Oelde | 299.09 mi (481.35 km) |
| Clacton-on-Sea to Oelsnitz | 486.98 mi (783.72 km) |
| Clacton-on-Sea to Oer-Erkenschwick | 261.47 mi (420.79 km) |
