| Grangemouth to Oberkirch | 716.40 mi (1,152.94 km) |
| Grangemouth to Obernburg am Main | 682.79 mi (1,098.85 km) |
| Grangemouth to Obernkirchen | 579.20 mi (932.13 km) |
| Grangemouth to Oberschleissheim | 838.12 mi (1,348.82 km) |
| Grangemouth to Oberstdorf | 841.01 mi (1,353.47 km) |
| Grangemouth to Obertraubling | 823.63 mi (1,325.51 km) |
| Grangemouth to Obertshausen | 662.08 mi (1,065.52 km) |
| Grangemouth to Oberursel | 647.34 mi (1,041.79 km) |
| Grangemouth to Ochsenfurt | 721.92 mi (1,161.81 km) |
| Grangemouth to Ochsenhausen | 796.25 mi (1,281.44 km) |
| Grangemouth to Ochtrup | 513.32 mi (826.10 km) |
| Grangemouth to Odenthal | 561.40 mi (903.49 km) |
| Grangemouth to Oelde | 561.48 mi (903.62 km) |
| Grangemouth to Oelsnitz | 759.86 mi (1,222.88 km) |
| Grangemouth to Oer-Erkenschwick | 538.68 mi (866.92 km) |
