| Wassenaar to Navodari | 1,230.77 mi (1,980.73 km) |
| Wassenaar to Negresti-Oas | 891.88 mi (1,435.35 km) |
| Wassenaar to Nehoiu | 1,097.14 mi (1,765.68 km) |
| Wassenaar to Ocna Mures | 959.45 mi (1,544.08 km) |
| Wassenaar to Odobesti | 1,112.96 mi (1,791.14 km) |
| Wassenaar to Odorheiu Secuiesc | 1,020.97 mi (1,643.09 km) |
| Wassenaar to Oltenita | 1,160.55 mi (1,867.73 km) |
| Wassenaar to Onesti | 1,083.26 mi (1,743.35 km) |
| Wassenaar to Oradea | 856.48 mi (1,378.38 km) |
| Wassenaar to Orastie | 953.07 mi (1,533.82 km) |
| Wassenaar to Oravita | 926.64 mi (1,491.28 km) |
| Wassenaar to Orsova | 967.44 mi (1,556.94 km) |
| Wassenaar to Otelu Rosu | 932.65 mi (1,500.95 km) |
| Wassenaar to Otopeni | 1,119.05 mi (1,800.94 km) |
| Wassenaar to Ovidiu | 1,230.61 mi (1,980.48 km) |
