| Hopa to Nasaud | 931.49 mi (1,499.10 km) |
| Hopa to Navodari | 678.67 mi (1,092.21 km) |
| Hopa to Negresti-Oas | 988.37 mi (1,590.64 km) |
| Hopa to Nehoiu | 805.48 mi (1,296.30 km) |
| Hopa to Ocna Mures | 937.60 mi (1,508.92 km) |
| Hopa to Odobesti | 778.02 mi (1,252.10 km) |
| Hopa to Odorheiu Secuiesc | 870.12 mi (1,400.32 km) |
| Hopa to Oltenita | 771.78 mi (1,242.06 km) |
| Hopa to Onesti | 802.41 mi (1,291.35 km) |
| Hopa to Oradea | 1,038.56 mi (1,671.41 km) |
| Hopa to Orastie | 959.44 mi (1,544.07 km) |
| Hopa to Oravita | 1,022.36 mi (1,645.33 km) |
| Hopa to Orsova | 985.14 mi (1,585.43 km) |
| Hopa to Otelu Rosu | 995.20 mi (1,601.62 km) |
| Hopa to Otopeni | 804.75 mi (1,295.12 km) |
