| Castleton to Arcos de Valdevez | 860.94 mi (1,385.55 km) |
| Castleton to Arcozelo | 916.58 mi (1,475.09 km) |
| Castleton to Arganil | 963.94 mi (1,551.30 km) |
| Castleton to Arouca | 918.84 mi (1,478.73 km) |
| Castleton to Arruda dos Vinhos | 1,060.36 mi (1,706.48 km) |
| Castleton to Aveiro | 944.68 mi (1,520.31 km) |
| Castleton to Aver-o-Mar | 895.60 mi (1,441.33 km) |
| Castleton to Aves | 886.06 mi (1,425.97 km) |
| Castleton to Azambuja | 1,051.95 mi (1,692.94 km) |
| Castleton to Baiao | 900.37 mi (1,449.00 km) |
| Castleton to Barcelos | 885.79 mi (1,425.54 km) |
| Castleton to Barreiro | 1,081.44 mi (1,740.41 km) |
| Castleton to Batalha | 1,012.16 mi (1,628.91 km) |
| Castleton to Beja | 1,108.63 mi (1,784.17 km) |
| Castleton to Belas | 1,077.17 mi (1,733.54 km) |
