| Trets to Navodari | 1,139.63 mi (1,834.06 km) |
| Trets to Negresti-Oas | 907.00 mi (1,459.68 km) |
| Trets to Nehoiu | 1,023.50 mi (1,647.16 km) |
| Trets to Ocna Mures | 909.94 mi (1,464.41 km) |
| Trets to Odobesti | 1,060.61 mi (1,706.88 km) |
| Trets to Odorheiu Secuiesc | 977.89 mi (1,573.76 km) |
| Trets to Oltenita | 1,043.49 mi (1,679.33 km) |
| Trets to Onesti | 1,047.55 mi (1,685.86 km) |
| Trets to Oradea | 826.59 mi (1,330.27 km) |
| Trets to Orastie | 874.90 mi (1,408.02 km) |
| Trets to Oravita | 798.20 mi (1,284.58 km) |
| Trets to Orsova | 832.53 mi (1,339.82 km) |
| Trets to Otelu Rosu | 832.40 mi (1,339.62 km) |
| Trets to Otopeni | 1,013.37 mi (1,630.86 km) |
| Trets to Ovidiu | 1,137.32 mi (1,830.34 km) |
