| Upper Grand Lagoon to Alenquer | 4,277.87 mi (6,884.57 km) |
| Upper Grand Lagoon to Alfena | 4,258.33 mi (6,853.12 km) |
| Upper Grand Lagoon to Alijo | 4,309.76 mi (6,935.89 km) |
| Upper Grand Lagoon to Aljustrel | 4,345.78 mi (6,993.86 km) |
| Upper Grand Lagoon to Almada | 4,278.31 mi (6,885.28 km) |
| Upper Grand Lagoon to Almargem | 4,269.02 mi (6,870.33 km) |
| Upper Grand Lagoon to Almeirim | 4,295.19 mi (6,912.44 km) |
| Upper Grand Lagoon to Amadora | 4,273.35 mi (6,877.30 km) |
| Upper Grand Lagoon to Amarante | 4,280.57 mi (6,888.91 km) |
| Upper Grand Lagoon to Amares | 4,260.39 mi (6,856.44 km) |
| Upper Grand Lagoon to Amora | 4,281.46 mi (6,890.35 km) |
| Upper Grand Lagoon to Anadia | 4,279.06 mi (6,886.48 km) |
| Upper Grand Lagoon to Angra do Heroismo | 3,330.91 mi (5,360.59 km) |
| Upper Grand Lagoon to Ansiao | 4,289.63 mi (6,903.49 km) |
| Upper Grand Lagoon to Anta | 4,257.93 mi (6,852.47 km) |
