| Marton to Nasaud | 1,214.27 mi (1,954.17 km) |
| Marton to Navodari | 1,498.67 mi (2,411.88 km) |
| Marton to Negresti-Oas | 1,153.76 mi (1,856.80 km) |
| Marton to Nehoiu | 1,365.69 mi (2,197.87 km) |
| Marton to Ocna Mures | 1,228.65 mi (1,977.32 km) |
| Marton to Odobesti | 1,377.96 mi (2,217.61 km) |
| Marton to Odorheiu Secuiesc | 1,287.28 mi (2,071.68 km) |
| Marton to Oltenita | 1,433.27 mi (2,306.62 km) |
| Marton to Onesti | 1,346.49 mi (2,166.96 km) |
| Marton to Oradea | 1,126.68 mi (1,813.22 km) |
| Marton to Orastie | 1,226.09 mi (1,973.20 km) |
| Marton to Oravita | 1,205.24 mi (1,939.65 km) |
| Marton to Orsova | 1,245.76 mi (2,004.85 km) |
| Marton to Otelu Rosu | 1,208.59 mi (1,945.03 km) |
| Marton to Otopeni | 1,391.26 mi (2,239.01 km) |
