| Preston to Oerlinghausen | 489.41 mi (787.63 km) |
| Preston to Oestrich-Winkel | 524.30 mi (843.77 km) |
| Preston to Offenburg | 587.52 mi (945.53 km) |
| Preston to Oftersheim | 570.69 mi (918.43 km) |
| Preston to Ohrdruf | 601.53 mi (968.07 km) |
| Preston to Ohringen | 610.99 mi (983.29 km) |
| Preston to Olbernhau | 709.78 mi (1,142.28 km) |
| Preston to Olching | 718.69 mi (1,156.62 km) |
| Preston to Oldenburg | 450.57 mi (725.12 km) |
| Preston to Oldenburg in Holstein | 551.62 mi (887.75 km) |
| Preston to Olfen | 444.30 mi (715.03 km) |
| Preston to Olpe | 482.26 mi (776.13 km) |
| Preston to Olsberg | 497.73 mi (801.02 km) |
| Preston to Oranienburg | 660.93 mi (1,063.66 km) |
| Preston to Ortenberg | 551.07 mi (886.86 km) |
