| Swansea to Nasaud | 5,263.90 mi (8,471.43 km) |
| Swansea to Navodari | 5,551.78 mi (8,934.73 km) |
| Swansea to Negresti-Oas | 5,202.78 mi (8,373.06 km) |
| Swansea to Nehoiu | 5,421.44 mi (8,724.97 km) |
| Swansea to Ocna Mures | 5,286.80 mi (8,508.29 km) |
| Swansea to Odobesti | 5,427.69 mi (8,735.02 km) |
| Swansea to Odorheiu Secuiesc | 5,340.60 mi (8,594.87 km) |
| Swansea to Oltenita | 5,494.38 mi (8,842.36 km) |
| Swansea to Onesti | 5,393.66 mi (8,680.26 km) |
| Swansea to Oradea | 5,187.03 mi (8,347.71 km) |
| Swansea to Orastie | 5,288.70 mi (8,511.34 km) |
| Swansea to Oravita | 5,271.50 mi (8,483.65 km) |
| Swansea to Orsova | 5,311.94 mi (8,548.74 km) |
| Swansea to Otelu Rosu | 5,273.72 mi (8,487.23 km) |
| Swansea to Otopeni | 5,451.97 mi (8,774.09 km) |
