| Nice to Oignies | 508.64 mi (818.58 km) |
| Nice to Oissel | 487.45 mi (784.47 km) |
| Nice to Olivet | 386.43 mi (621.90 km) |
| Nice to Ollioules | 81.19 mi (130.67 km) |
| Nice to Olonne-sur-Mer | 481.83 mi (775.42 km) |
| Nice to Oloron-Sainte-Marie | 396.33 mi (637.83 km) |
| Nice to Onet Village | 236.54 mi (380.67 km) |
| Nice to Onnaing | 492.92 mi (793.28 km) |
| Nice to Orange | 125.89 mi (202.60 km) |
| Nice to Orchies | 504.47 mi (811.87 km) |
| Nice to Orleans | 388.09 mi (624.57 km) |
| Nice to Orly | 418.80 mi (673.99 km) |
| Nice to Ormesson-sur-Marne | 417.37 mi (671.69 km) |
| Nice to Orsay | 421.79 mi (678.80 km) |
| Nice to Orthez | 402.29 mi (647.42 km) |
