| Porthcawl to Nasaud | 1,288.08 mi (2,072.97 km) |
| Porthcawl to Navodari | 1,561.15 mi (2,512.43 km) |
| Porthcawl to Negresti-Oas | 1,230.23 mi (1,979.86 km) |
| Porthcawl to Nehoiu | 1,427.67 mi (2,297.62 km) |
| Porthcawl to Ocna Mures | 1,290.35 mi (2,076.62 km) |
| Porthcawl to Odobesti | 1,447.13 mi (2,328.94 km) |
| Porthcawl to Odorheiu Secuiesc | 1,354.51 mi (2,179.87 km) |
| Porthcawl to Oltenita | 1,484.92 mi (2,389.74 km) |
| Porthcawl to Onesti | 1,419.22 mi (2,284.01 km) |
| Porthcawl to Oradea | 1,187.21 mi (1,910.63 km) |
| Porthcawl to Orastie | 1,278.86 mi (2,058.13 km) |
| Porthcawl to Oravita | 1,241.42 mi (1,997.87 km) |
| Porthcawl to Orsova | 1,282.45 mi (2,063.90 km) |
| Porthcawl to Otelu Rosu | 1,253.52 mi (2,017.34 km) |
| Porthcawl to Otopeni | 1,444.55 mi (2,324.78 km) |
