| On Top of the World Designated Place to Alenquer | 4,137.50 mi (6,658.66 km) |
| On Top of the World Designated Place to Alfena | 4,125.57 mi (6,639.47 km) |
| On Top of the World Designated Place to Alijo | 4,177.87 mi (6,723.64 km) |
| On Top of the World Designated Place to Aljustrel | 4,202.41 mi (6,763.13 km) |
| On Top of the World Designated Place to Almada | 4,136.64 mi (6,657.28 km) |
| On Top of the World Designated Place to Almargem | 4,127.81 mi (6,643.06 km) |
| On Top of the World Designated Place to Almeirim | 4,155.60 mi (6,687.79 km) |
| On Top of the World Designated Place to Amadora | 4,131.79 mi (6,649.48 km) |
| On Top of the World Designated Place to Amarante | 4,148.23 mi (6,675.93 km) |
| On Top of the World Designated Place to Amares | 4,129.06 mi (6,645.08 km) |
| On Top of the World Designated Place to Amora | 4,139.65 mi (6,662.12 km) |
| On Top of the World Designated Place to Anadia | 4,143.66 mi (6,668.58 km) |
| On Top of the World Designated Place to Angra do Heroismo | 3,179.19 mi (5,116.40 km) |
| On Top of the World Designated Place to Ansiao | 4,152.52 mi (6,682.83 km) |
| On Top of the World Designated Place to Anta | 4,124.32 mi (6,637.46 km) |
