| Marienberg to Navodari | 841.15 mi (1,353.70 km) |
| Marienberg to Negresti-Oas | 500.64 mi (805.70 km) |
| Marienberg to Nehoiu | 707.78 mi (1,139.07 km) |
| Marienberg to Ocna Mures | 570.39 mi (917.96 km) |
| Marienberg to Odobesti | 722.17 mi (1,162.22 km) |
| Marienberg to Odorheiu Secuiesc | 630.51 mi (1,014.70 km) |
| Marienberg to Oltenita | 774.64 mi (1,246.67 km) |
| Marienberg to Onesti | 692.12 mi (1,113.86 km) |
| Marienberg to Oradea | 468.10 mi (753.34 km) |
| Marienberg to Orastie | 567.62 mi (913.50 km) |
| Marienberg to Oravita | 552.54 mi (889.22 km) |
| Marienberg to Orsova | 592.16 mi (952.99 km) |
| Marienberg to Otelu Rosu | 551.90 mi (888.20 km) |
| Marienberg to Otopeni | 732.60 mi (1,179.01 km) |
| Marienberg to Ovidiu | 841.16 mi (1,353.71 km) |
