| Dalmine to Octeville | 590.33 mi (950.05 km) |
| Dalmine to Oignies | 451.25 mi (726.22 km) |
| Dalmine to Oissel | 471.63 mi (759.01 km) |
| Dalmine to Olivet | 395.03 mi (635.74 km) |
| Dalmine to Ollioules | 253.76 mi (408.39 km) |
| Dalmine to Olonne-sur-Mer | 547.88 mi (881.72 km) |
| Dalmine to Oloron-Sainte-Marie | 531.03 mi (854.61 km) |
| Dalmine to Onet Village | 353.45 mi (568.82 km) |
| Dalmine to Onnaing | 428.78 mi (690.06 km) |
| Dalmine to Orange | 256.62 mi (413.00 km) |
| Dalmine to Orchies | 443.82 mi (714.25 km) |
| Dalmine to Orleans | 395.58 mi (636.62 km) |
| Dalmine to Orly | 399.97 mi (643.69 km) |
| Dalmine to Ormesson-sur-Marne | 395.69 mi (636.80 km) |
| Dalmine to Orsay | 406.62 mi (654.40 km) |
