| Dormagen to Octeville | 386.27 mi (621.64 km) |
| Dormagen to Oignies | 172.58 mi (277.74 km) |
| Dormagen to Oissel | 280.64 mi (451.65 km) |
| Dormagen to Olivet | 314.02 mi (505.37 km) |
| Dormagen to Ollioules | 551.90 mi (888.19 km) |
| Dormagen to Olonne-sur-Mer | 501.58 mi (807.22 km) |
| Dormagen to Oloron-Sainte-Marie | 647.38 mi (1,041.86 km) |
| Dormagen to Onet Village | 504.78 mi (812.37 km) |
| Dormagen to Onnaing | 149.06 mi (239.89 km) |
| Dormagen to Orange | 489.95 mi (788.50 km) |
| Dormagen to Orchies | 161.90 mi (260.55 km) |
| Dormagen to Orleans | 311.80 mi (501.80 km) |
| Dormagen to Orly | 255.32 mi (410.90 km) |
| Dormagen to Ormesson-sur-Marne | 248.44 mi (399.82 km) |
| Dormagen to Orsay | 264.46 mi (425.61 km) |
