| Seabrook to Arcos de Valdevez | 3,507.30 mi (5,644.46 km) |
| Seabrook to Arcozelo | 3,516.50 mi (5,659.25 km) |
| Seabrook to Arganil | 3,566.62 mi (5,739.91 km) |
| Seabrook to Arouca | 3,538.72 mi (5,695.03 km) |
| Seabrook to Arruda dos Vinhos | 3,549.72 mi (5,712.72 km) |
| Seabrook to Aveiro | 3,526.77 mi (5,675.78 km) |
| Seabrook to Aver-o-Mar | 3,501.46 mi (5,635.05 km) |
| Seabrook to Aves | 3,523.19 mi (5,670.03 km) |
| Seabrook to Azambuja | 3,557.36 mi (5,725.02 km) |
| Seabrook to Baiao | 3,543.00 mi (5,701.91 km) |
| Seabrook to Barcelos | 3,505.99 mi (5,642.35 km) |
| Seabrook to Barreiro | 3,558.27 mi (5,726.49 km) |
| Seabrook to Batalha | 3,545.08 mi (5,705.26 km) |
| Seabrook to Beja | 3,634.55 mi (5,849.24 km) |
| Seabrook to Belas | 3,545.17 mi (5,705.40 km) |
