| Mackworth to Oberkirch | 518.16 mi (833.90 km) |
| Mackworth to Obernburg am Main | 506.84 mi (815.68 km) |
| Mackworth to Obernkirchen | 449.09 mi (722.73 km) |
| Mackworth to Oberschleissheim | 658.04 mi (1,059.01 km) |
| Mackworth to Oberstdorf | 645.87 mi (1,039.42 km) |
| Mackworth to Obertraubling | 654.99 mi (1,054.11 km) |
| Mackworth to Obertshausen | 487.34 mi (784.29 km) |
| Mackworth to Oberursel | 472.90 mi (761.06 km) |
| Mackworth to Ochsenfurt | 549.36 mi (884.10 km) |
| Mackworth to Ochsenhausen | 604.99 mi (973.63 km) |
| Mackworth to Ochtrup | 369.68 mi (594.94 km) |
| Mackworth to Odenthal | 390.55 mi (628.54 km) |
| Mackworth to Oelde | 415.17 mi (668.15 km) |
| Mackworth to Oelsnitz | 611.21 mi (983.64 km) |
| Mackworth to Oer-Erkenschwick | 381.65 mi (614.20 km) |
