| Upper Grand Lagoon to Arcos de Valdevez | 4,251.67 mi (6,842.39 km) |
| Upper Grand Lagoon to Arcozelo | 4,256.25 mi (6,849.77 km) |
| Upper Grand Lagoon to Arganil | 4,302.55 mi (6,924.28 km) |
| Upper Grand Lagoon to Arouca | 4,278.38 mi (6,885.39 km) |
| Upper Grand Lagoon to Arruda dos Vinhos | 4,276.70 mi (6,882.68 km) |
| Upper Grand Lagoon to Aveiro | 4,264.14 mi (6,862.47 km) |
| Upper Grand Lagoon to Aver-o-Mar | 4,242.95 mi (6,828.36 km) |
| Upper Grand Lagoon to Aves | 4,265.53 mi (6,864.71 km) |
| Upper Grand Lagoon to Azambuja | 4,285.20 mi (6,896.36 km) |
| Upper Grand Lagoon to Baiao | 4,284.24 mi (6,894.82 km) |
| Upper Grand Lagoon to Barcelos | 4,248.31 mi (6,836.99 km) |
| Upper Grand Lagoon to Barreiro | 4,283.31 mi (6,893.32 km) |
| Upper Grand Lagoon to Batalha | 4,276.53 mi (6,882.40 km) |
| Upper Grand Lagoon to Beja | 4,357.86 mi (7,013.29 km) |
| Upper Grand Lagoon to Belas | 4,270.51 mi (6,872.72 km) |
