| Hoogvliet to Navodari | 1,227.43 mi (1,975.35 km) |
| Hoogvliet to Negresti-Oas | 890.18 mi (1,432.60 km) |
| Hoogvliet to Nehoiu | 1,093.75 mi (1,760.22 km) |
| Hoogvliet to Ocna Mures | 956.04 mi (1,538.59 km) |
| Hoogvliet to Odobesti | 1,110.35 mi (1,786.94 km) |
| Hoogvliet to Odorheiu Secuiesc | 1,018.16 mi (1,638.58 km) |
| Hoogvliet to Oltenita | 1,156.07 mi (1,860.51 km) |
| Hoogvliet to Onesti | 1,081.05 mi (1,739.79 km) |
| Hoogvliet to Oradea | 852.94 mi (1,372.67 km) |
| Hoogvliet to Orastie | 948.67 mi (1,526.74 km) |
| Hoogvliet to Oravita | 920.44 mi (1,481.30 km) |
| Hoogvliet to Orsova | 961.32 mi (1,547.09 km) |
| Hoogvliet to Otelu Rosu | 927.39 mi (1,492.48 km) |
| Hoogvliet to Otopeni | 1,114.74 mi (1,794.00 km) |
| Hoogvliet to Ovidiu | 1,227.20 mi (1,974.99 km) |
