| Castle Rock to Alenquer | 4,850.81 mi (7,806.62 km) |
| Castle Rock to Alfena | 4,785.41 mi (7,701.37 km) |
| Castle Rock to Alijo | 4,828.58 mi (7,770.84 km) |
| Castle Rock to Aljustrel | 4,933.73 mi (7,940.08 km) |
| Castle Rock to Almada | 4,859.31 mi (7,820.30 km) |
| Castle Rock to Almargem | 4,847.67 mi (7,801.58 km) |
| Castle Rock to Almeirim | 4,862.33 mi (7,825.16 km) |
| Castle Rock to Amadora | 4,853.89 mi (7,811.59 km) |
| Castle Rock to Amarante | 4,803.82 mi (7,731.00 km) |
| Castle Rock to Amares | 4,778.67 mi (7,690.52 km) |
| Castle Rock to Amora | 4,863.19 mi (7,826.55 km) |
| Castle Rock to Anadia | 4,821.17 mi (7,758.93 km) |
| Castle Rock to Angra do Heroismo | 4,027.97 mi (6,482.39 km) |
| Castle Rock to Ansiao | 4,841.71 mi (7,791.98 km) |
| Castle Rock to Anta | 4,790.24 mi (7,709.14 km) |
