| Alba Iulia to Navodari | 273.52 mi (440.18 km) |
| Alba Iulia to Negresti-Oas | 124.73 mi (200.73 km) |
| Alba Iulia to Nehoiu | 140.86 mi (226.70 km) |
| Alba Iulia to Ocna Mures | 26.28 mi (42.29 km) |
| Alba Iulia to Odobesti | 169.34 mi (272.53 km) |
| Alba Iulia to Odorheiu Secuiesc | 84.57 mi (136.10 km) |
| Alba Iulia to Oltenita | 202.72 mi (326.25 km) |
| Alba Iulia to Onesti | 153.66 mi (247.29 km) |
| Alba Iulia to Oradea | 104.68 mi (168.47 km) |
| Alba Iulia to Orastie | 23.25 mi (37.41 km) |
| Alba Iulia to Oravita | 115.52 mi (185.91 km) |
| Alba Iulia to Orsova | 108.79 mi (175.08 km) |
| Alba Iulia to Otelu Rosu | 69.81 mi (112.35 km) |
| Alba Iulia to Otopeni | 160.43 mi (258.19 km) |
| Alba Iulia to Ovidiu | 272.88 mi (439.15 km) |
