| Porthcawl to Montalegre | 694.72 mi (1,118.04 km) |
| Porthcawl to Montemor-o-Novo | 913.12 mi (1,469.53 km) |
| Porthcawl to Montemor-o-Velho | 817.32 mi (1,315.35 km) |
| Porthcawl to Montijo | 919.38 mi (1,479.59 km) |
| Porthcawl to Mortagua | 793.44 mi (1,276.92 km) |
| Porthcawl to Moura | 940.08 mi (1,512.91 km) |
| Porthcawl to Murtosa | 778.91 mi (1,253.54 km) |
| Porthcawl to Nazare | 860.49 mi (1,384.82 km) |
| Porthcawl to Nelas | 783.03 mi (1,260.17 km) |
| Porthcawl to Obidos | 877.89 mi (1,412.83 km) |
| Porthcawl to Odemira | 989.97 mi (1,593.21 km) |
| Porthcawl to Odivelas | 916.03 mi (1,474.21 km) |
| Porthcawl to Oeiras | 925.10 mi (1,488.81 km) |
| Porthcawl to Olhao | 1,019.16 mi (1,640.17 km) |
| Porthcawl to Oliveira de Azemeis | 769.57 mi (1,238.50 km) |
