| Marianske Lazne to Navodari | 841.01 mi (1,353.47 km) |
| Marianske Lazne to Negresti-Oas | 507.43 mi (816.63 km) |
| Marianske Lazne to Nehoiu | 707.32 mi (1,138.32 km) |
| Marianske Lazne to Ocna Mures | 569.61 mi (916.70 km) |
| Marianske Lazne to Odobesti | 724.80 mi (1,166.45 km) |
| Marianske Lazne to Odorheiu Secuiesc | 632.35 mi (1,017.68 km) |
| Marianske Lazne to Oltenita | 770.01 mi (1,239.21 km) |
| Marianske Lazne to Onesti | 696.34 mi (1,120.66 km) |
| Marianske Lazne to Oradea | 466.47 mi (750.71 km) |
| Marianske Lazne to Orastie | 562.53 mi (905.30 km) |
| Marianske Lazne to Oravita | 539.38 mi (868.05 km) |
| Marianske Lazne to Orsova | 579.78 mi (933.06 km) |
| Marianske Lazne to Otelu Rosu | 542.91 mi (873.73 km) |
| Marianske Lazne to Otopeni | 728.50 mi (1,172.41 km) |
| Marianske Lazne to Ovidiu | 840.75 mi (1,353.05 km) |
