| Plymouth to Oberkirch | 562.91 mi (905.92 km) |
| Plymouth to Obernburg am Main | 589.01 mi (947.93 km) |
| Plymouth to Obernkirchen | 586.47 mi (943.83 km) |
| Plymouth to Oberschleissheim | 721.19 mi (1,160.64 km) |
| Plymouth to Oberstdorf | 685.08 mi (1,102.53 km) |
| Plymouth to Obertraubling | 734.23 mi (1,181.63 km) |
| Plymouth to Obertshausen | 573.30 mi (922.64 km) |
| Plymouth to Oberursel | 560.94 mi (902.74 km) |
| Plymouth to Ochsenfurt | 631.91 mi (1,016.95 km) |
| Plymouth to Ochsenhausen | 654.30 mi (1,052.99 km) |
| Plymouth to Ochtrup | 505.23 mi (813.10 km) |
| Plymouth to Odenthal | 494.32 mi (795.53 km) |
| Plymouth to Oelde | 542.10 mi (872.42 km) |
| Plymouth to Oelsnitz | 716.93 mi (1,153.78 km) |
| Plymouth to Oer-Erkenschwick | 502.50 mi (808.69 km) |
