| Stansted Mountfitchet to Oberkirch | 418.68 mi (673.80 km) |
| Stansted Mountfitchet to Obernburg am Main | 414.75 mi (667.48 km) |
| Stansted Mountfitchet to Obernkirchen | 379.35 mi (610.50 km) |
| Stansted Mountfitchet to Oberschleissheim | 562.79 mi (905.73 km) |
| Stansted Mountfitchet to Oberstdorf | 546.52 mi (879.53 km) |
| Stansted Mountfitchet to Obertraubling | 563.57 mi (906.98 km) |
| Stansted Mountfitchet to Obertshausen | 396.07 mi (637.42 km) |
| Stansted Mountfitchet to Oberursel | 382.05 mi (614.85 km) |
| Stansted Mountfitchet to Ochsenfurt | 457.87 mi (736.88 km) |
| Stansted Mountfitchet to Ochsenhausen | 506.82 mi (815.65 km) |
| Stansted Mountfitchet to Ochtrup | 297.74 mi (479.16 km) |
| Stansted Mountfitchet to Odenthal | 303.62 mi (488.63 km) |
| Stansted Mountfitchet to Oelde | 339.14 mi (545.79 km) |
| Stansted Mountfitchet to Oelsnitz | 528.01 mi (849.76 km) |
| Stansted Mountfitchet to Oer-Erkenschwick | 301.95 mi (485.94 km) |
