| Cambridge to Oberkirch | 432.68 mi (696.33 km) |
| Cambridge to Obernburg am Main | 424.43 mi (683.06 km) |
| Cambridge to Obernkirchen | 380.54 mi (612.42 km) |
| Cambridge to Oberschleissheim | 574.17 mi (924.04 km) |
| Cambridge to Oberstdorf | 560.44 mi (901.94 km) |
| Cambridge to Obertraubling | 573.07 mi (922.27 km) |
| Cambridge to Obertshausen | 405.34 mi (652.33 km) |
| Cambridge to Oberursel | 391.11 mi (629.42 km) |
| Cambridge to Ochsenfurt | 467.32 mi (752.07 km) |
| Cambridge to Ochsenhausen | 519.90 mi (836.70 km) |
| Cambridge to Ochtrup | 299.29 mi (481.66 km) |
| Cambridge to Odenthal | 310.78 mi (500.14 km) |
| Cambridge to Oelde | 342.26 mi (550.81 km) |
| Cambridge to Oelsnitz | 534.12 mi (859.58 km) |
| Cambridge to Oer-Erkenschwick | 306.23 mi (492.84 km) |
