| Castanet-Tolosan to Navodari | 1,344.51 mi (2,163.78 km) |
| Castanet-Tolosan to Negresti-Oas | 1,095.91 mi (1,763.70 km) |
| Castanet-Tolosan to Nehoiu | 1,225.55 mi (1,972.32 km) |
| Castanet-Tolosan to Ocna Mures | 1,107.43 mi (1,782.23 km) |
| Castanet-Tolosan to Odobesti | 1,261.10 mi (2,029.55 km) |
| Castanet-Tolosan to Odorheiu Secuiesc | 1,176.02 mi (1,892.62 km) |
| Castanet-Tolosan to Oltenita | 1,249.35 mi (2,010.64 km) |
| Castanet-Tolosan to Onesti | 1,246.07 mi (2,005.36 km) |
| Castanet-Tolosan to Oradea | 1,019.41 mi (1,640.58 km) |
| Castanet-Tolosan to Orastie | 1,074.84 mi (1,729.78 km) |
| Castanet-Tolosan to Oravita | 1,001.53 mi (1,611.81 km) |
| Castanet-Tolosan to Orsova | 1,037.05 mi (1,668.97 km) |
| Castanet-Tolosan to Otelu Rosu | 1,033.73 mi (1,663.63 km) |
| Castanet-Tolosan to Otopeni | 1,218.06 mi (1,960.29 km) |
| Castanet-Tolosan to Ovidiu | 1,342.34 mi (2,160.29 km) |
