| Middelkerke to Navodari | 1,280.36 mi (2,060.55 km) |
| Middelkerke to Negresti-Oas | 948.60 mi (1,526.63 km) |
| Middelkerke to Nehoiu | 1,146.78 mi (1,845.57 km) |
| Middelkerke to Ocna Mures | 1,009.31 mi (1,624.33 km) |
| Middelkerke to Odobesti | 1,165.71 mi (1,876.03 km) |
| Middelkerke to Odorheiu Secuiesc | 1,073.12 mi (1,727.02 km) |
| Middelkerke to Oltenita | 1,205.49 mi (1,940.06 km) |
| Middelkerke to Onesti | 1,137.63 mi (1,830.84 km) |
| Middelkerke to Oradea | 906.12 mi (1,458.26 km) |
| Middelkerke to Orastie | 998.86 mi (1,607.50 km) |
| Middelkerke to Oravita | 964.60 mi (1,552.38 km) |
| Middelkerke to Orsova | 1,005.64 mi (1,618.42 km) |
| Middelkerke to Otelu Rosu | 974.79 mi (1,568.77 km) |
| Middelkerke to Otopeni | 1,164.79 mi (1,874.55 km) |
| Middelkerke to Ovidiu | 1,279.92 mi (2,059.83 km) |
