| Big Spring to Alenquer | 4,979.61 mi (8,013.90 km) |
| Big Spring to Alfena | 4,933.67 mi (7,939.98 km) |
| Big Spring to Alijo | 4,980.97 mi (8,016.10 km) |
| Big Spring to Aljustrel | 5,056.73 mi (8,138.03 km) |
| Big Spring to Almada | 4,984.59 mi (8,021.92 km) |
| Big Spring to Almargem | 4,973.87 mi (8,004.67 km) |
| Big Spring to Almeirim | 4,993.86 mi (8,036.84 km) |
| Big Spring to Amadora | 4,979.31 mi (8,013.43 km) |
| Big Spring to Amarante | 4,953.98 mi (7,972.67 km) |
| Big Spring to Amares | 4,930.68 mi (7,935.16 km) |
| Big Spring to Amora | 4,988.18 mi (8,027.71 km) |
| Big Spring to Anadia | 4,963.30 mi (7,987.66 km) |
| Big Spring to Angra do Heroismo | 4,088.93 mi (6,580.50 km) |
| Big Spring to Ansiao | 4,979.69 mi (8,014.04 km) |
| Big Spring to Anta | 4,936.29 mi (7,944.18 km) |
