| Hajdudorog to Navodari | 417.58 mi (672.03 km) |
| Hajdudorog to Negresti-Oas | 89.30 mi (143.72 km) |
| Hajdudorog to Nehoiu | 284.58 mi (457.99 km) |
| Hajdudorog to Ocna Mures | 148.43 mi (238.88 km) |
| Hajdudorog to Odobesti | 298.91 mi (481.04 km) |
| Hajdudorog to Odorheiu Secuiesc | 206.83 mi (332.87 km) |
| Hajdudorog to Oltenita | 356.65 mi (573.97 km) |
| Hajdudorog to Onesti | 270.39 mi (435.15 km) |
| Hajdudorog to Oradea | 55.07 mi (88.63 km) |
| Hajdudorog to Orastie | 157.86 mi (254.05 km) |
| Hajdudorog to Oravita | 192.03 mi (309.05 km) |
| Hajdudorog to Orsova | 217.84 mi (350.57 km) |
| Hajdudorog to Otelu Rosu | 163.85 mi (263.69 km) |
| Hajdudorog to Otopeni | 314.11 mi (505.52 km) |
| Hajdudorog to Ovidiu | 417.69 mi (672.20 km) |
