| Barking to Oerlinghausen | 368.24 mi (592.62 km) |
| Barking to Oestrich-Winkel | 361.86 mi (582.35 km) |
| Barking to Offenburg | 407.99 mi (656.60 km) |
| Barking to Oftersheim | 402.73 mi (648.14 km) |
| Barking to Ohrdruf | 463.56 mi (746.03 km) |
| Barking to Ohringen | 445.10 mi (716.33 km) |
| Barking to Olbernhau | 577.35 mi (929.15 km) |
| Barking to Olching | 550.28 mi (885.60 km) |
| Barking to Oldenburg | 360.56 mi (580.26 km) |
| Barking to Oldenburg in Holstein | 488.14 mi (785.59 km) |
| Barking to Olfen | 313.35 mi (504.28 km) |
| Barking to Olpe | 336.88 mi (542.16 km) |
| Barking to Olsberg | 361.91 mi (582.44 km) |
| Barking to Oranienburg | 563.28 mi (906.52 km) |
| Barking to Ortenberg | 398.90 mi (641.97 km) |
