| Circleville to Nasaud | 4,959.72 mi (7,981.91 km) |
| Circleville to Navodari | 5,246.78 mi (8,443.87 km) |
| Circleville to Negresti-Oas | 4,898.66 mi (7,883.63 km) |
| Circleville to Nehoiu | 5,114.87 mi (8,231.59 km) |
| Circleville to Ocna Mures | 4,978.73 mi (8,012.49 km) |
| Circleville to Odobesti | 5,123.93 mi (8,246.16 km) |
| Circleville to Odorheiu Secuiesc | 5,035.06 mi (8,103.14 km) |
| Circleville to Oltenita | 5,184.63 mi (8,343.85 km) |
| Circleville to Onesti | 5,090.84 mi (8,192.92 km) |
| Circleville to Oradea | 4,877.53 mi (7,849.63 km) |
| Circleville to Orastie | 4,977.68 mi (8,010.81 km) |
| Circleville to Oravita | 4,955.19 mi (7,974.61 km) |
| Circleville to Orsova | 4,995.97 mi (8,040.24 km) |
| Circleville to Otelu Rosu | 4,960.10 mi (7,982.51 km) |
| Circleville to Otopeni | 5,142.48 mi (8,276.02 km) |
