| Dour to Oignies | 34.99 mi (56.31 km) |
| Dour to Oissel | 140.22 mi (225.67 km) |
| Dour to Olivet | 194.61 mi (313.19 km) |
| Dour to Ollioules | 510.90 mi (822.22 km) |
| Dour to Olonne-sur-Mer | 368.48 mi (593.01 km) |
| Dour to Oloron-Sainte-Marie | 539.02 mi (867.46 km) |
| Dour to Onet Village | 420.46 mi (676.66 km) |
| Dour to Onnaing | 8.07 mi (12.99 km) |
| Dour to Orange | 435.17 mi (700.33 km) |
| Dour to Orchies | 24.20 mi (38.94 km) |
| Dour to Orleans | 192.03 mi (309.04 km) |
| Dour to Orly | 130.10 mi (209.37 km) |
| Dour to Ormesson-sur-Marne | 124.51 mi (200.37 km) |
| Dour to Orsay | 137.45 mi (221.20 km) |
| Dour to Orthez | 523.23 mi (842.05 km) |
