| Middle Island to Alenquer | 3,309.71 mi (5,326.47 km) |
| Middle Island to Alfena | 3,274.69 mi (5,270.10 km) |
| Middle Island to Alijo | 3,324.17 mi (5,349.73 km) |
| Middle Island to Aljustrel | 3,383.90 mi (5,445.85 km) |
| Middle Island to Almada | 3,313.09 mi (5,331.91 km) |
| Middle Island to Almargem | 3,302.84 mi (5,315.40 km) |
| Middle Island to Almeirim | 3,325.16 mi (5,351.32 km) |
| Middle Island to Amadora | 3,307.91 mi (5,323.57 km) |
| Middle Island to Amarante | 3,296.00 mi (5,304.40 km) |
| Middle Island to Amares | 3,274.12 mi (5,269.19 km) |
| Middle Island to Amora | 3,316.55 mi (5,337.47 km) |
| Middle Island to Anadia | 3,300.38 mi (5,311.46 km) |
| Middle Island to Angra do Heroismo | 2,405.69 mi (3,871.58 km) |
| Middle Island to Ansiao | 3,314.35 mi (5,333.94 km) |
| Middle Island to Anta | 3,275.91 mi (5,272.06 km) |
