| Radstock to Oberkirch | 505.30 mi (813.20 km) |
| Radstock to Obernburg am Main | 517.85 mi (833.41 km) |
| Radstock to Obernkirchen | 498.41 mi (802.11 km) |
| Radstock to Oberschleissheim | 658.55 mi (1,059.83 km) |
| Radstock to Oberstdorf | 631.44 mi (1,016.20 km) |
| Radstock to Obertraubling | 665.77 mi (1,071.45 km) |
| Radstock to Obertshausen | 500.60 mi (805.64 km) |
| Radstock to Oberursel | 487.34 mi (784.31 km) |
| Radstock to Ochsenfurt | 561.19 mi (903.14 km) |
| Radstock to Ochsenhausen | 596.24 mi (959.56 km) |
| Radstock to Ochtrup | 416.76 mi (670.71 km) |
| Radstock to Odenthal | 414.52 mi (667.11 km) |
| Radstock to Oelde | 456.33 mi (734.39 km) |
| Radstock to Oelsnitz | 639.26 mi (1,028.79 km) |
| Radstock to Oer-Erkenschwick | 417.85 mi (672.46 km) |
