| Chepstow to Oberkirch | 522.41 mi (840.73 km) |
| Chepstow to Obernburg am Main | 530.80 mi (854.25 km) |
| Chepstow to Obernkirchen | 503.44 mi (810.21 km) |
| Chepstow to Oberschleissheim | 673.84 mi (1,084.45 km) |
| Chepstow to Oberstdorf | 649.18 mi (1,044.75 km) |
| Chepstow to Obertraubling | 679.23 mi (1,093.12 km) |
| Chepstow to Obertshausen | 513.05 mi (825.68 km) |
| Chepstow to Oberursel | 499.51 mi (803.89 km) |
| Chepstow to Ochsenfurt | 574.15 mi (924.00 km) |
| Chepstow to Ochsenhausen | 612.96 mi (986.46 km) |
| Chepstow to Ochtrup | 421.83 mi (678.88 km) |
| Chepstow to Odenthal | 424.42 mi (683.04 km) |
| Chepstow to Oelde | 462.93 mi (745.02 km) |
| Chepstow to Oelsnitz | 649.32 mi (1,044.98 km) |
| Chepstow to Oer-Erkenschwick | 425.26 mi (684.40 km) |
