| Seraing to Navodari | 1,157.34 mi (1,862.57 km) |
| Seraing to Negresti-Oas | 828.02 mi (1,332.58 km) |
| Seraing to Nehoiu | 1,023.85 mi (1,647.73 km) |
| Seraing to Ocna Mures | 886.54 mi (1,426.74 km) |
| Seraing to Odobesti | 1,043.52 mi (1,679.38 km) |
| Seraing to Odorheiu Secuiesc | 950.85 mi (1,530.25 km) |
| Seraing to Oltenita | 1,081.79 mi (1,740.98 km) |
| Seraing to Onesti | 1,015.95 mi (1,635.01 km) |
| Seraing to Oradea | 783.41 mi (1,260.77 km) |
| Seraing to Orastie | 875.35 mi (1,408.74 km) |
| Seraing to Oravita | 840.59 mi (1,352.79 km) |
| Seraing to Orsova | 881.62 mi (1,418.84 km) |
| Seraing to Otelu Rosu | 850.91 mi (1,369.41 km) |
| Seraing to Otopeni | 1,041.19 mi (1,675.64 km) |
| Seraing to Ovidiu | 1,156.84 mi (1,861.76 km) |
