| Chaudfontaine to Oignies | 116.21 mi (187.02 km) |
| Chaudfontaine to Oissel | 219.29 mi (352.92 km) |
| Chaudfontaine to Olivet | 252.28 mi (406.00 km) |
| Chaudfontaine to Ollioules | 514.42 mi (827.88 km) |
| Chaudfontaine to Olonne-sur-Mer | 438.83 mi (706.23 km) |
| Chaudfontaine to Oloron-Sainte-Marie | 588.97 mi (947.86 km) |
| Chaudfontaine to Onet Village | 452.35 mi (727.98 km) |
| Chaudfontaine to Onnaing | 90.48 mi (145.62 km) |
| Chaudfontaine to Orange | 446.96 mi (719.32 km) |
| Chaudfontaine to Orchies | 105.20 mi (169.30 km) |
| Chaudfontaine to Orleans | 250.00 mi (402.33 km) |
| Chaudfontaine to Orly | 192.72 mi (310.16 km) |
| Chaudfontaine to Ormesson-sur-Marne | 185.89 mi (299.16 km) |
| Chaudfontaine to Orsay | 201.80 mi (324.76 km) |
| Chaudfontaine to Orthez | 575.07 mi (925.48 km) |
