| Bargoed to Oberkirch | 546.33 mi (879.24 km) |
| Bargoed to Obernburg am Main | 555.24 mi (893.57 km) |
| Bargoed to Obernkirchen | 526.79 mi (847.79 km) |
| Bargoed to Oberschleissheim | 698.12 mi (1,123.52 km) |
| Bargoed to Oberstdorf | 672.95 mi (1,083.01 km) |
| Bargoed to Obertraubling | 703.66 mi (1,132.43 km) |
| Bargoed to Obertshausen | 537.49 mi (865.01 km) |
| Bargoed to Oberursel | 523.95 mi (843.21 km) |
| Bargoed to Ochsenfurt | 598.58 mi (963.33 km) |
| Bargoed to Ochsenhausen | 636.99 mi (1,025.13 km) |
| Bargoed to Ochtrup | 445.24 mi (716.54 km) |
| Bargoed to Odenthal | 448.72 mi (722.15 km) |
| Bargoed to Oelde | 486.69 mi (783.25 km) |
| Bargoed to Oelsnitz | 673.61 mi (1,084.07 km) |
| Bargoed to Oer-Erkenschwick | 449.20 mi (722.93 km) |
