| Penkridge to Oberkirch | 531.91 mi (856.02 km) |
| Penkridge to Obernburg am Main | 525.07 mi (845.02 km) |
| Penkridge to Obernkirchen | 473.15 mi (761.46 km) |
| Penkridge to Oberschleissheim | 674.84 mi (1,086.05 km) |
| Penkridge to Oberstdorf | 659.75 mi (1,061.76 km) |
| Penkridge to Obertraubling | 673.63 mi (1,084.11 km) |
| Penkridge to Obertshausen | 505.88 mi (814.14 km) |
| Penkridge to Oberursel | 491.59 mi (791.14 km) |
| Penkridge to Ochsenfurt | 567.88 mi (913.92 km) |
| Penkridge to Ochsenhausen | 619.87 mi (997.59 km) |
| Penkridge to Ochtrup | 393.12 mi (632.67 km) |
| Penkridge to Odenthal | 410.47 mi (660.58 km) |
| Penkridge to Oelde | 437.95 mi (704.81 km) |
| Penkridge to Oelsnitz | 632.60 mi (1,018.08 km) |
| Penkridge to Oer-Erkenschwick | 403.51 mi (649.39 km) |
