| Morlanwelz-Mariemont to Navodari | 1,209.86 mi (1,947.09 km) |
| Morlanwelz-Mariemont to Negresti-Oas | 882.62 mi (1,420.44 km) |
| Morlanwelz-Mariemont to Nehoiu | 1,076.52 mi (1,732.50 km) |
| Morlanwelz-Mariemont to Ocna Mures | 939.46 mi (1,511.91 km) |
| Morlanwelz-Mariemont to Odobesti | 1,096.96 mi (1,765.39 km) |
| Morlanwelz-Mariemont to Odorheiu Secuiesc | 1,004.26 mi (1,616.20 km) |
| Morlanwelz-Mariemont to Oltenita | 1,133.07 mi (1,823.50 km) |
| Morlanwelz-Mariemont to Onesti | 1,069.80 mi (1,721.68 km) |
| Morlanwelz-Mariemont to Oradea | 836.44 mi (1,346.13 km) |
| Morlanwelz-Mariemont to Orastie | 927.16 mi (1,492.12 km) |
| Morlanwelz-Mariemont to Oravita | 890.00 mi (1,432.31 km) |
| Morlanwelz-Mariemont to Orsova | 931.04 mi (1,498.36 km) |
| Morlanwelz-Mariemont to Otelu Rosu | 901.67 mi (1,451.09 km) |
| Morlanwelz-Mariemont to Otopeni | 1,092.76 mi (1,758.62 km) |
| Morlanwelz-Mariemont to Ovidiu | 1,209.29 mi (1,946.16 km) |
