| Mons-en-Baroeul to Oignies | 12.67 mi (20.39 km) |
| Mons-en-Baroeul to Oissel | 126.68 mi (203.87 km) |
| Mons-en-Baroeul to Olivet | 199.20 mi (320.59 km) |
| Mons-en-Baroeul to Ollioules | 533.80 mi (859.07 km) |
| Mons-en-Baroeul to Olonne-sur-Mer | 360.51 mi (580.19 km) |
| Mons-en-Baroeul to Oloron-Sainte-Marie | 543.16 mi (874.13 km) |
| Mons-en-Baroeul to Onet Village | 433.97 mi (698.41 km) |
| Mons-en-Baroeul to Onnaing | 27.49 mi (44.24 km) |
| Mons-en-Baroeul to Orange | 455.96 mi (733.79 km) |
| Mons-en-Baroeul to Orchies | 12.65 mi (20.37 km) |
| Mons-en-Baroeul to Orleans | 196.53 mi (316.29 km) |
| Mons-en-Baroeul to Orly | 134.67 mi (216.72 km) |
| Mons-en-Baroeul to Ormesson-sur-Marne | 130.43 mi (209.90 km) |
| Mons-en-Baroeul to Orsay | 140.17 mi (225.58 km) |
| Mons-en-Baroeul to Orthez | 526.44 mi (847.22 km) |
