| Preston to Oberkirch | 589.53 mi (948.75 km) |
| Preston to Obernburg am Main | 572.83 mi (921.87 km) |
| Preston to Obernkirchen | 501.29 mi (806.75 km) |
| Preston to Oberschleissheim | 725.76 mi (1,168.00 km) |
| Preston to Oberstdorf | 716.93 mi (1,153.78 km) |
| Preston to Obertraubling | 719.87 mi (1,158.52 km) |
| Preston to Obertshausen | 552.88 mi (889.77 km) |
| Preston to Oberursel | 538.26 mi (866.24 km) |
| Preston to Ochsenfurt | 614.71 mi (989.29 km) |
| Preston to Ochsenhausen | 675.11 mi (1,086.48 km) |
| Preston to Ochtrup | 424.76 mi (683.58 km) |
| Preston to Odenthal | 454.17 mi (730.91 km) |
| Preston to Oelde | 471.83 mi (759.34 km) |
| Preston to Oelsnitz | 670.50 mi (1,079.07 km) |
| Preston to Oer-Erkenschwick | 441.07 mi (709.83 km) |
