| Aci Catena to Montemor-o-Novo | 1,267.80 mi (2,040.32 km) |
| Aci Catena to Montemor-o-Velho | 1,289.22 mi (2,074.80 km) |
| Aci Catena to Montijo | 1,304.40 mi (2,099.22 km) |
| Aci Catena to Mortagua | 1,265.76 mi (2,037.04 km) |
| Aci Catena to Moura | 1,229.32 mi (1,978.39 km) |
| Aci Catena to Murtosa | 1,287.33 mi (2,071.76 km) |
| Aci Catena to Nazare | 1,310.04 mi (2,108.31 km) |
| Aci Catena to Nelas | 1,245.78 mi (2,004.89 km) |
| Aci Catena to Obidos | 1,315.50 mi (2,117.09 km) |
| Aci Catena to Odemira | 1,297.67 mi (2,088.40 km) |
| Aci Catena to Odivelas | 1,318.89 mi (2,122.55 km) |
| Aci Catena to Oeiras | 1,326.81 mi (2,135.29 km) |
| Aci Catena to Olhao | 1,259.97 mi (2,027.72 km) |
| Aci Catena to Oliveira de Azemeis | 1,279.33 mi (2,058.89 km) |
| Aci Catena to Oliveira de Frades | 1,263.74 mi (2,033.80 km) |
