| Frederikshavn to Navodari | 1,193.62 mi (1,920.95 km) |
| Frederikshavn to Negresti-Oas | 851.05 mi (1,369.63 km) |
| Frederikshavn to Nehoiu | 1,071.53 mi (1,724.47 km) |
| Frederikshavn to Ocna Mures | 948.03 mi (1,525.71 km) |
| Frederikshavn to Odobesti | 1,068.54 mi (1,719.64 km) |
| Frederikshavn to Odorheiu Secuiesc | 989.52 mi (1,592.49 km) |
| Frederikshavn to Oltenita | 1,154.25 mi (1,857.58 km) |
| Frederikshavn to Onesti | 1,032.56 mi (1,661.74 km) |
| Frederikshavn to Oradea | 860.76 mi (1,385.26 km) |
| Frederikshavn to Orastie | 964.21 mi (1,551.75 km) |
| Frederikshavn to Oravita | 980.40 mi (1,577.81 km) |
| Frederikshavn to Orsova | 1,015.03 mi (1,633.53 km) |
| Frederikshavn to Otelu Rosu | 965.04 mi (1,553.08 km) |
| Frederikshavn to Otopeni | 1,112.34 mi (1,790.14 km) |
| Frederikshavn to Ovidiu | 1,195.07 mi (1,923.27 km) |
