| Diyadin to Nasaud | 1,101.05 mi (1,771.97 km) |
| Diyadin to Navodari | 840.21 mi (1,352.19 km) |
| Diyadin to Negresti-Oas | 1,158.75 mi (1,864.82 km) |
| Diyadin to Nehoiu | 969.89 mi (1,560.89 km) |
| Diyadin to Ocna Mures | 1,104.06 mi (1,776.82 km) |
| Diyadin to Odobesti | 944.87 mi (1,520.61 km) |
| Diyadin to Odorheiu Secuiesc | 1,037.41 mi (1,669.56 km) |
| Diyadin to Oltenita | 929.97 mi (1,496.64 km) |
| Diyadin to Onesti | 970.76 mi (1,562.29 km) |
| Diyadin to Oradea | 1,205.94 mi (1,940.77 km) |
| Diyadin to Orastie | 1,123.48 mi (1,808.06 km) |
| Diyadin to Oravita | 1,182.14 mi (1,902.47 km) |
| Diyadin to Orsova | 1,143.85 mi (1,840.85 km) |
| Diyadin to Otelu Rosu | 1,157.38 mi (1,862.62 km) |
| Diyadin to Otopeni | 965.05 mi (1,553.10 km) |
