| Louth to Arcos de Valdevez | 885.75 mi (1,425.47 km) |
| Louth to Arcozelo | 940.61 mi (1,513.77 km) |
| Louth to Arganil | 983.55 mi (1,582.87 km) |
| Louth to Arouca | 940.77 mi (1,514.02 km) |
| Louth to Arruda dos Vinhos | 1,082.20 mi (1,741.63 km) |
| Louth to Aveiro | 967.86 mi (1,557.62 km) |
| Louth to Aver-o-Mar | 921.03 mi (1,482.25 km) |
| Louth to Aves | 909.34 mi (1,463.45 km) |
| Louth to Azambuja | 1,073.08 mi (1,726.96 km) |
| Louth to Baiao | 921.77 mi (1,483.45 km) |
| Louth to Barcelos | 910.76 mi (1,465.73 km) |
| Louth to Barreiro | 1,102.73 mi (1,774.68 km) |
| Louth to Batalha | 1,034.06 mi (1,664.16 km) |
| Louth to Beja | 1,123.93 mi (1,808.79 km) |
| Louth to Belas | 1,099.51 mi (1,769.49 km) |
