| Dartford to Oberkirch | 402.63 mi (647.97 km) |
| Dartford to Obernburg am Main | 405.96 mi (653.33 km) |
| Dartford to Obernkirchen | 383.75 mi (617.59 km) |
| Dartford to Oberschleissheim | 550.76 mi (886.36 km) |
| Dartford to Oberstdorf | 530.27 mi (853.38 km) |
| Dartford to Obertraubling | 554.57 mi (892.49 km) |
| Dartford to Obertshausen | 388.03 mi (624.47 km) |
| Dartford to Oberursel | 374.42 mi (602.56 km) |
| Dartford to Ochsenfurt | 449.28 mi (723.05 km) |
| Dartford to Ochsenhausen | 492.10 mi (791.96 km) |
| Dartford to Ochtrup | 302.21 mi (486.37 km) |
| Dartford to Odenthal | 299.56 mi (482.09 km) |
| Dartford to Oelde | 340.97 mi (548.74 km) |
| Dartford to Oelsnitz | 524.45 mi (844.02 km) |
| Dartford to Oer-Erkenschwick | 302.34 mi (486.57 km) |
