| Perry Barr to Oberkirch | 517.47 mi (832.79 km) |
| Perry Barr to Obernburg am Main | 512.45 mi (824.71 km) |
| Perry Barr to Obernkirchen | 464.59 mi (747.69 km) |
| Perry Barr to Oberschleissheim | 661.49 mi (1,064.57 km) |
| Perry Barr to Oberstdorf | 645.31 mi (1,038.52 km) |
| Perry Barr to Obertraubling | 661.15 mi (1,064.02 km) |
| Perry Barr to Obertshausen | 493.44 mi (794.11 km) |
| Perry Barr to Oberursel | 479.23 mi (771.25 km) |
| Perry Barr to Ochsenfurt | 555.39 mi (893.82 km) |
| Perry Barr to Ochsenhausen | 605.79 mi (974.92 km) |
| Perry Barr to Ochtrup | 384.08 mi (618.11 km) |
| Perry Barr to Odenthal | 398.86 mi (641.90 km) |
| Perry Barr to Oelde | 428.29 mi (689.27 km) |
| Perry Barr to Oelsnitz | 621.77 mi (1,000.65 km) |
| Perry Barr to Oer-Erkenschwick | 393.19 mi (632.77 km) |
