| Aberystwyth to Montalegre | 752.01 mi (1,210.24 km) |
| Aberystwyth to Montemor-o-Novo | 971.42 mi (1,563.36 km) |
| Aberystwyth to Montemor-o-Velho | 873.81 mi (1,406.26 km) |
| Aberystwyth to Montijo | 976.38 mi (1,571.32 km) |
| Aberystwyth to Mortagua | 850.71 mi (1,369.09 km) |
| Aberystwyth to Moura | 999.92 mi (1,609.22 km) |
| Aberystwyth to Murtosa | 835.09 mi (1,343.95 km) |
| Aberystwyth to Nazare | 916.56 mi (1,475.06 km) |
| Aberystwyth to Nelas | 841.06 mi (1,353.56 km) |
| Aberystwyth to Obidos | 933.94 mi (1,503.04 km) |
| Aberystwyth to Odemira | 1,048.03 mi (1,686.64 km) |
| Aberystwyth to Odivelas | 972.42 mi (1,564.96 km) |
| Aberystwyth to Oeiras | 981.28 mi (1,579.22 km) |
| Aberystwyth to Olhao | 1,078.73 mi (1,736.06 km) |
| Aberystwyth to Oliveira de Azemeis | 826.02 mi (1,329.35 km) |
