| Mardin to Nasaud | 1,078.24 mi (1,735.25 km) |
| Mardin to Navodari | 796.21 mi (1,281.37 km) |
| Mardin to Negresti-Oas | 1,138.79 mi (1,832.71 km) |
| Mardin to Nehoiu | 929.89 mi (1,496.52 km) |
| Mardin to Ocna Mures | 1,067.60 mi (1,718.14 km) |
| Mardin to Odobesti | 914.73 mi (1,472.12 km) |
| Mardin to Odorheiu Secuiesc | 1,006.12 mi (1,619.19 km) |
| Mardin to Oltenita | 872.46 mi (1,404.10 km) |
| Mardin to Onesti | 946.03 mi (1,522.49 km) |
| Mardin to Oradea | 1,170.75 mi (1,884.14 km) |
| Mardin to Orastie | 1,077.62 mi (1,734.26 km) |
| Mardin to Oravita | 1,121.45 mi (1,804.81 km) |
| Mardin to Orsova | 1,081.06 mi (1,739.80 km) |
| Mardin to Otelu Rosu | 1,104.55 mi (1,777.61 km) |
| Mardin to Otopeni | 912.20 mi (1,468.04 km) |
