| Guichen to Obernburg am Main | 512.75 mi (825.19 km) |
| Guichen to Obernkirchen | 566.55 mi (911.78 km) |
| Guichen to Oberschleissheim | 615.97 mi (991.31 km) |
| Guichen to Oberstdorf | 562.32 mi (904.97 km) |
| Guichen to Obertraubling | 642.42 mi (1,033.87 km) |
| Guichen to Obertshausen | 502.47 mi (808.64 km) |
| Guichen to Oberursel | 493.62 mi (794.41 km) |
| Guichen to Ochsenfurt | 551.49 mi (887.54 km) |
| Guichen to Ochsenhausen | 542.23 mi (872.63 km) |
| Guichen to Ochtrup | 493.81 mi (794.71 km) |
| Guichen to Odenthal | 452.10 mi (727.59 km) |
| Guichen to Oelde | 516.29 mi (830.89 km) |
| Guichen to Oelsnitz | 651.65 mi (1,048.73 km) |
| Guichen to Oer-Erkenschwick | 476.12 mi (766.23 km) |
| Guichen to Oerlinghausen | 540.11 mi (869.22 km) |
