| Preston to Alenquer | 1,058.89 mi (1,704.12 km) |
| Preston to Alfena | 906.09 mi (1,458.21 km) |
| Preston to Alijo | 890.30 mi (1,432.80 km) |
| Preston to Aljustrel | 1,124.96 mi (1,810.45 km) |
| Preston to Almada | 1,085.52 mi (1,746.98 km) |
| Preston to Almargem | 1,075.85 mi (1,731.42 km) |
| Preston to Almeirim | 1,043.68 mi (1,679.65 km) |
| Preston to Amadora | 1,082.98 mi (1,742.88 km) |
| Preston to Amarante | 898.10 mi (1,445.35 km) |
| Preston to Amares | 878.23 mi (1,413.38 km) |
| Preston to Amora | 1,088.61 mi (1,751.95 km) |
| Preston to Anadia | 958.63 mi (1,542.76 km) |
| Preston to Angra do Heroismo | 1,555.05 mi (2,502.61 km) |
| Preston to Ansiao | 993.26 mi (1,598.49 km) |
| Preston to Anta | 922.84 mi (1,485.17 km) |
