| Frederikssund to Oignies | 527.12 mi (848.31 km) |
| Frederikssund to Oissel | 641.57 mi (1,032.51 km) |
| Frederikssund to Olivet | 699.56 mi (1,125.83 km) |
| Frederikssund to Ollioules | 919.51 mi (1,479.81 km) |
| Frederikssund to Olonne-sur-Mer | 875.43 mi (1,408.87 km) |
| Frederikssund to Oloron-Sainte-Marie | 1,038.43 mi (1,671.20 km) |
| Frederikssund to Onet Village | 894.83 mi (1,440.09 km) |
| Frederikssund to Onnaing | 514.00 mi (827.20 km) |
| Frederikssund to Orange | 868.84 mi (1,398.27 km) |
| Frederikssund to Orchies | 519.53 mi (836.10 km) |
| Frederikssund to Orleans | 697.14 mi (1,121.93 km) |
| Frederikssund to Orly | 636.83 mi (1,024.88 km) |
| Frederikssund to Ormesson-sur-Marne | 630.60 mi (1,014.85 km) |
| Frederikssund to Orsay | 644.92 mi (1,037.90 km) |
| Frederikssund to Orthez | 1,024.60 mi (1,648.94 km) |
