| Florennes to Oignies | 72.58 mi (116.80 km) |
| Florennes to Oissel | 168.79 mi (271.64 km) |
| Florennes to Olivet | 205.39 mi (330.55 km) |
| Florennes to Ollioules | 494.89 mi (796.44 km) |
| Florennes to Olonne-sur-Mer | 388.98 mi (626.00 km) |
| Florennes to Oloron-Sainte-Marie | 546.19 mi (879.01 km) |
| Florennes to Onet Village | 417.39 mi (671.73 km) |
| Florennes to Onnaing | 45.38 mi (73.04 km) |
| Florennes to Orange | 422.48 mi (679.92 km) |
| Florennes to Orchies | 61.90 mi (99.63 km) |
| Florennes to Orleans | 203.00 mi (326.70 km) |
| Florennes to Orly | 143.86 mi (231.52 km) |
| Florennes to Ormesson-sur-Marne | 137.26 mi (220.90 km) |
| Florennes to Orsay | 152.60 mi (245.59 km) |
| Florennes to Orthez | 531.49 mi (855.35 km) |
