| Castelsarrasin to Navodari | 1,356.65 mi (2,183.32 km) |
| Castelsarrasin to Negresti-Oas | 1,099.95 mi (1,770.21 km) |
| Castelsarrasin to Nehoiu | 1,235.84 mi (1,988.89 km) |
| Castelsarrasin to Ocna Mures | 1,115.33 mi (1,794.95 km) |
| Castelsarrasin to Odobesti | 1,270.40 mi (2,044.51 km) |
| Castelsarrasin to Odorheiu Secuiesc | 1,184.13 mi (1,905.67 km) |
| Castelsarrasin to Oltenita | 1,262.40 mi (2,031.64 km) |
| Castelsarrasin to Onesti | 1,254.28 mi (2,018.57 km) |
| Castelsarrasin to Oradea | 1,025.30 mi (1,650.06 km) |
| Castelsarrasin to Orastie | 1,084.12 mi (1,744.72 km) |
| Castelsarrasin to Oravita | 1,013.04 mi (1,630.33 km) |
| Castelsarrasin to Orsova | 1,049.33 mi (1,688.73 km) |
| Castelsarrasin to Otelu Rosu | 1,043.90 mi (1,680.00 km) |
| Castelsarrasin to Otopeni | 1,230.21 mi (1,979.83 km) |
| Castelsarrasin to Ovidiu | 1,354.60 mi (2,180.02 km) |
