| Charleroi to Oignies | 63.54 mi (102.26 km) |
| Charleroi to Oissel | 165.79 mi (266.81 km) |
| Charleroi to Olivet | 209.29 mi (336.82 km) |
| Charleroi to Ollioules | 506.07 mi (814.45 km) |
| Charleroi to Olonne-sur-Mer | 389.76 mi (627.26 km) |
| Charleroi to Oloron-Sainte-Marie | 551.69 mi (887.85 km) |
| Charleroi to Onet Village | 425.69 mi (685.08 km) |
| Charleroi to Onnaing | 36.80 mi (59.22 km) |
| Charleroi to Orange | 433.00 mi (696.85 km) |
| Charleroi to Orchies | 52.58 mi (84.62 km) |
| Charleroi to Orleans | 206.83 mi (332.86 km) |
| Charleroi to Orly | 146.45 mi (235.69 km) |
| Charleroi to Ormesson-sur-Marne | 140.14 mi (225.53 km) |
| Charleroi to Orsay | 154.78 mi (249.10 km) |
| Charleroi to Orthez | 536.64 mi (863.64 km) |
