| Nice to Navodari | 1,058.62 mi (1,703.69 km) |
| Nice to Negresti-Oas | 828.10 mi (1,332.69 km) |
| Nice to Nehoiu | 942.45 mi (1,516.72 km) |
| Nice to Ocna Mures | 829.37 mi (1,334.73 km) |
| Nice to Odobesti | 979.65 mi (1,576.60 km) |
| Nice to Odorheiu Secuiesc | 897.20 mi (1,443.90 km) |
| Nice to Oltenita | 962.58 mi (1,549.12 km) |
| Nice to Onesti | 966.79 mi (1,555.89 km) |
| Nice to Oradea | 746.91 mi (1,202.03 km) |
| Nice to Orastie | 794.03 mi (1,277.87 km) |
| Nice to Oravita | 717.13 mi (1,154.11 km) |
| Nice to Orsova | 751.48 mi (1,209.39 km) |
| Nice to Otelu Rosu | 751.42 mi (1,209.29 km) |
| Nice to Otopeni | 932.34 mi (1,500.46 km) |
| Nice to Ovidiu | 1,056.32 mi (1,699.98 km) |
