| Harborne to Oberkirch | 517.07 mi (832.15 km) |
| Harborne to Obernburg am Main | 513.02 mi (825.63 km) |
| Harborne to Obernkirchen | 466.71 mi (751.09 km) |
| Harborne to Oberschleissheim | 661.69 mi (1,064.89 km) |
| Harborne to Oberstdorf | 644.89 mi (1,037.85 km) |
| Harborne to Obertraubling | 661.77 mi (1,065.01 km) |
| Harborne to Obertshausen | 494.09 mi (795.17 km) |
| Harborne to Oberursel | 479.93 mi (772.37 km) |
| Harborne to Ochsenfurt | 556.02 mi (894.82 km) |
| Harborne to Ochsenhausen | 605.59 mi (974.61 km) |
| Harborne to Ochtrup | 386.06 mi (621.30 km) |
| Harborne to Odenthal | 399.89 mi (643.56 km) |
| Harborne to Oelde | 430.05 mi (692.10 km) |
| Harborne to Oelsnitz | 623.08 mi (1,002.75 km) |
| Harborne to Oer-Erkenschwick | 394.72 mi (635.24 km) |
