| Kasterlee to Navodari | 1,191.53 mi (1,917.58 km) |
| Kasterlee to Negresti-Oas | 857.69 mi (1,380.32 km) |
| Kasterlee to Nehoiu | 1,057.86 mi (1,702.46 km) |
| Kasterlee to Ocna Mures | 920.23 mi (1,480.97 km) |
| Kasterlee to Odobesti | 1,075.89 mi (1,731.47 km) |
| Kasterlee to Odorheiu Secuiesc | 983.41 mi (1,582.65 km) |
| Kasterlee to Oltenita | 1,118.20 mi (1,799.57 km) |
| Kasterlee to Onesti | 1,047.37 mi (1,685.58 km) |
| Kasterlee to Oradea | 817.02 mi (1,314.87 km) |
| Kasterlee to Orastie | 911.11 mi (1,466.30 km) |
| Kasterlee to Oravita | 879.91 mi (1,416.07 km) |
| Kasterlee to Orsova | 920.88 mi (1,482.02 km) |
| Kasterlee to Otelu Rosu | 888.38 mi (1,429.71 km) |
| Kasterlee to Otopeni | 1,077.19 mi (1,733.56 km) |
| Kasterlee to Ovidiu | 1,191.17 mi (1,917.01 km) |
