| Cincinnati to Nasaud | 5,040.21 mi (8,111.43 km) |
| Cincinnati to Navodari | 5,327.47 mi (8,573.74 km) |
| Cincinnati to Negresti-Oas | 4,979.11 mi (8,013.11 km) |
| Cincinnati to Nehoiu | 5,195.80 mi (8,361.84 km) |
| Cincinnati to Ocna Mures | 5,059.88 mi (8,143.09 km) |
| Cincinnati to Odobesti | 5,204.38 mi (8,375.64 km) |
| Cincinnati to Odorheiu Secuiesc | 5,115.79 mi (8,233.07 km) |
| Cincinnati to Oltenita | 5,266.11 mi (8,474.99 km) |
| Cincinnati to Onesti | 5,171.13 mi (8,322.12 km) |
| Cincinnati to Oradea | 4,958.90 mi (7,980.57 km) |
| Cincinnati to Orastie | 5,059.33 mi (8,142.20 km) |
| Cincinnati to Oravita | 5,037.71 mi (8,107.41 km) |
| Cincinnati to Orsova | 5,078.44 mi (8,172.96 km) |
| Cincinnati to Otelu Rosu | 5,042.17 mi (8,114.60 km) |
| Cincinnati to Otopeni | 5,223.91 mi (8,407.06 km) |
