| Castres to Navodari | 1,306.46 mi (2,102.54 km) |
| Castres to Negresti-Oas | 1,059.07 mi (1,704.41 km) |
| Castres to Nehoiu | 1,187.63 mi (1,911.31 km) |
| Castres to Ocna Mures | 1,069.82 mi (1,721.71 km) |
| Castres to Odobesti | 1,223.29 mi (1,968.70 km) |
| Castres to Odorheiu Secuiesc | 1,138.37 mi (1,832.04 km) |
| Castres to Oltenita | 1,211.27 mi (1,949.35 km) |
| Castres to Onesti | 1,208.41 mi (1,944.74 km) |
| Castres to Oradea | 982.17 mi (1,580.65 km) |
| Castres to Orastie | 1,037.04 mi (1,668.96 km) |
| Castres to Oravita | 963.53 mi (1,550.66 km) |
| Castres to Orsova | 999.00 mi (1,607.74 km) |
| Castres to Otelu Rosu | 995.84 mi (1,602.65 km) |
| Castres to Otopeni | 1,180.02 mi (1,899.05 km) |
| Castres to Ovidiu | 1,304.28 mi (2,099.04 km) |
