| Denain to Oignies | 20.17 mi (32.46 km) |
| Denain to Oissel | 123.22 mi (198.31 km) |
| Denain to Olivet | 183.21 mi (294.85 km) |
| Denain to Ollioules | 510.04 mi (820.83 km) |
| Denain to Olonne-sur-Mer | 353.09 mi (568.24 km) |
| Denain to Oloron-Sainte-Marie | 527.88 mi (849.53 km) |
| Denain to Onet Village | 413.70 mi (665.79 km) |
| Denain to Onnaing | 9.84 mi (15.84 km) |
| Denain to Orange | 432.80 mi (696.53 km) |
| Denain to Orchies | 12.08 mi (19.45 km) |
| Denain to Orleans | 180.59 mi (290.63 km) |
| Denain to Orly | 118.35 mi (190.47 km) |
| Denain to Ormesson-sur-Marne | 113.30 mi (182.34 km) |
| Denain to Orsay | 125.00 mi (201.17 km) |
| Denain to Orthez | 511.70 mi (823.50 km) |
