| Croxley Green to Oberkirch | 434.59 mi (699.40 km) |
| Croxley Green to Obernburg am Main | 436.96 mi (703.22 km) |
| Croxley Green to Obernkirchen | 409.12 mi (658.41 km) |
| Croxley Green to Oberschleissheim | 582.44 mi (937.35 km) |
| Croxley Green to Oberstdorf | 562.22 mi (904.80 km) |
| Croxley Green to Obertraubling | 585.68 mi (942.56 km) |
| Croxley Green to Obertshausen | 418.83 mi (674.04 km) |
| Croxley Green to Oberursel | 405.09 mi (651.93 km) |
| Croxley Green to Ochsenfurt | 480.26 mi (772.90 km) |
| Croxley Green to Ochsenhausen | 524.03 mi (843.34 km) |
| Croxley Green to Ochtrup | 327.45 mi (526.98 km) |
| Croxley Green to Odenthal | 328.97 mi (529.43 km) |
| Croxley Green to Oelde | 367.75 mi (591.83 km) |
| Croxley Green to Oelsnitz | 553.84 mi (891.31 km) |
| Croxley Green to Oer-Erkenschwick | 329.80 mi (530.77 km) |
