| Seaham to Nasaud | 1,224.63 mi (1,970.85 km) |
| Seaham to Navodari | 1,509.64 mi (2,429.53 km) |
| Seaham to Negresti-Oas | 1,163.99 mi (1,873.26 km) |
| Seaham to Nehoiu | 1,376.85 mi (2,215.83 km) |
| Seaham to Ocna Mures | 1,240.02 mi (1,995.62 km) |
| Seaham to Odobesti | 1,388.49 mi (2,234.57 km) |
| Seaham to Odorheiu Secuiesc | 1,298.10 mi (2,089.10 km) |
| Seaham to Oltenita | 1,445.19 mi (2,325.81 km) |
| Seaham to Onesti | 1,356.76 mi (2,183.49 km) |
| Seaham to Oradea | 1,138.31 mi (1,831.94 km) |
| Seaham to Orastie | 1,238.19 mi (1,992.68 km) |
| Seaham to Oravita | 1,218.65 mi (1,961.23 km) |
| Seaham to Orsova | 1,259.06 mi (2,026.27 km) |
| Seaham to Otelu Rosu | 1,221.33 mi (1,965.54 km) |
| Seaham to Otopeni | 1,403.10 mi (2,258.07 km) |
