| Trowbridge to Oberkirch | 496.05 mi (798.32 km) |
| Trowbridge to Obernburg am Main | 507.79 mi (817.21 km) |
| Trowbridge to Obernkirchen | 487.88 mi (785.17 km) |
| Trowbridge to Oberschleissheim | 648.90 mi (1,044.30 km) |
| Trowbridge to Oberstdorf | 622.38 mi (1,001.63 km) |
| Trowbridge to Obertraubling | 655.79 mi (1,055.40 km) |
| Trowbridge to Obertshausen | 490.47 mi (789.33 km) |
| Trowbridge to Oberursel | 477.17 mi (767.93 km) |
| Trowbridge to Ochsenfurt | 551.12 mi (886.95 km) |
| Trowbridge to Ochsenhausen | 586.91 mi (944.54 km) |
| Trowbridge to Ochtrup | 406.23 mi (653.77 km) |
| Trowbridge to Odenthal | 404.12 mi (650.37 km) |
| Trowbridge to Oelde | 445.80 mi (717.44 km) |
| Trowbridge to Oelsnitz | 628.89 mi (1,012.10 km) |
| Trowbridge to Oer-Erkenschwick | 407.33 mi (655.53 km) |
