| Ovar to Navodari | 1,893.01 mi (3,046.51 km) |
| Ovar to Negresti-Oas | 1,642.21 mi (2,642.87 km) |
| Ovar to Nehoiu | 1,774.98 mi (2,856.56 km) |
| Ovar to Ocna Mures | 1,656.72 mi (2,666.23 km) |
| Ovar to Odobesti | 1,810.65 mi (2,913.96 km) |
| Ovar to Odorheiu Secuiesc | 1,725.39 mi (2,776.74 km) |
| Ovar to Oltenita | 1,797.16 mi (2,892.25 km) |
| Ovar to Onesti | 1,795.48 mi (2,889.54 km) |
| Ovar to Oradea | 1,567.54 mi (2,522.71 km) |
| Ovar to Orastie | 1,624.39 mi (2,614.20 km) |
| Ovar to Oravita | 1,550.61 mi (2,495.47 km) |
| Ovar to Orsova | 1,585.67 mi (2,551.89 km) |
| Ovar to Otelu Rosu | 1,583.22 mi (2,547.95 km) |
| Ovar to Otopeni | 1,766.65 mi (2,843.14 km) |
| Ovar to Ovidiu | 1,890.76 mi (3,042.88 km) |
