| Cernavoda to Navodari | 28.68 mi (46.15 km) |
| Cernavoda to Negresti-Oas | 328.96 mi (529.40 km) |
| Cernavoda to Nehoiu | 109.95 mi (176.94 km) |
| Cernavoda to Ocna Mures | 247.23 mi (397.88 km) |
| Cernavoda to Odobesti | 109.41 mi (176.07 km) |
| Cernavoda to Odorheiu Secuiesc | 190.37 mi (306.36 km) |
| Cernavoda to Oltenita | 71.33 mi (114.79 km) |
| Cernavoda to Onesti | 146.23 mi (235.33 km) |
| Cernavoda to Oradea | 350.09 mi (563.42 km) |
| Cernavoda to Orastie | 257.81 mi (414.91 km) |
| Cernavoda to Oravita | 315.50 mi (507.75 km) |
| Cernavoda to Orsova | 278.90 mi (448.84 km) |
| Cernavoda to Otelu Rosu | 289.54 mi (465.97 km) |
| Cernavoda to Otopeni | 97.96 mi (157.65 km) |
| Cernavoda to Ovidiu | 26.45 mi (42.57 km) |
