| Altena to Octeville | 425.14 mi (684.20 km) |
| Altena to Oignies | 211.59 mi (340.52 km) |
| Altena to Oissel | 319.92 mi (514.85 km) |
| Altena to Olivet | 350.64 mi (564.31 km) |
| Altena to Ollioules | 570.22 mi (917.69 km) |
| Altena to Olonne-sur-Mer | 539.70 mi (868.56 km) |
| Altena to Oloron-Sainte-Marie | 680.42 mi (1,095.03 km) |
| Altena to Onet Village | 533.47 mi (858.53 km) |
| Altena to Onnaing | 188.33 mi (303.09 km) |
| Altena to Orange | 512.23 mi (824.36 km) |
| Altena to Orchies | 200.99 mi (323.46 km) |
| Altena to Orleans | 348.49 mi (560.85 km) |
| Altena to Orly | 293.14 mi (471.77 km) |
| Altena to Ormesson-sur-Marne | 286.18 mi (460.56 km) |
| Altena to Orsay | 302.42 mi (486.70 km) |
