| Marum to Navodari | 1,179.67 mi (1,898.49 km) |
| Marum to Negresti-Oas | 834.73 mi (1,343.36 km) |
| Marum to Nehoiu | 1,046.80 mi (1,684.66 km) |
| Marum to Ocna Mures | 909.94 mi (1,464.40 km) |
| Marum to Odobesti | 1,058.85 mi (1,704.05 km) |
| Marum to Odorheiu Secuiesc | 968.21 mi (1,558.19 km) |
| Marum to Oltenita | 1,115.30 mi (1,794.89 km) |
| Marum to Onesti | 1,027.42 mi (1,653.48 km) |
| Marum to Oradea | 808.29 mi (1,300.81 km) |
| Marum to Orastie | 908.48 mi (1,462.05 km) |
| Marum to Oravita | 891.54 mi (1,434.79 km) |
| Marum to Orsova | 931.63 mi (1,499.31 km) |
| Marum to Otelu Rosu | 892.56 mi (1,436.44 km) |
| Marum to Otopeni | 1,073.15 mi (1,727.07 km) |
| Marum to Ovidiu | 1,179.85 mi (1,898.78 km) |
