| Grangemouth to Oerlinghausen | 574.32 mi (924.27 km) |
| Grangemouth to Oestrich-Winkel | 638.72 mi (1,027.91 km) |
| Grangemouth to Offenburg | 715.63 mi (1,151.70 km) |
| Grangemouth to Oftersheim | 688.11 mi (1,107.40 km) |
| Grangemouth to Ohrdruf | 692.48 mi (1,114.43 km) |
| Grangemouth to Ohringen | 725.26 mi (1,167.20 km) |
| Grangemouth to Olbernhau | 791.52 mi (1,273.83 km) |
| Grangemouth to Olching | 832.56 mi (1,339.88 km) |
| Grangemouth to Oldenburg | 516.40 mi (831.07 km) |
| Grangemouth to Oldenburg in Holstein | 587.19 mi (945.00 km) |
| Grangemouth to Olfen | 539.98 mi (869.01 km) |
| Grangemouth to Olpe | 585.57 mi (942.38 km) |
| Grangemouth to Olsberg | 592.89 mi (954.16 km) |
| Grangemouth to Oranienburg | 716.19 mi (1,152.59 km) |
| Grangemouth to Ortenberg | 655.90 mi (1,055.56 km) |
