| Sonderborg to Oignies | 418.40 mi (673.34 km) |
| Sonderborg to Oissel | 532.55 mi (857.06 km) |
| Sonderborg to Olivet | 593.38 mi (954.95 km) |
| Sonderborg to Ollioules | 832.60 mi (1,339.93 km) |
| Sonderborg to Olonne-sur-Mer | 766.75 mi (1,233.97 km) |
| Sonderborg to Oloron-Sainte-Marie | 934.45 mi (1,503.85 km) |
| Sonderborg to Onet Village | 795.81 mi (1,280.74 km) |
| Sonderborg to Onnaing | 406.14 mi (653.61 km) |
| Sonderborg to Orange | 776.83 mi (1,250.18 km) |
| Sonderborg to Orchies | 411.06 mi (661.54 km) |
| Sonderborg to Orleans | 590.91 mi (950.98 km) |
| Sonderborg to Orly | 530.01 mi (852.97 km) |
| Sonderborg to Ormesson-sur-Marne | 523.94 mi (843.19 km) |
| Sonderborg to Orsay | 537.86 mi (865.60 km) |
| Sonderborg to Orthez | 920.03 mi (1,480.65 km) |
