| Howard to Alenquer | 3,927.33 mi (6,320.43 km) |
| Howard to Alfena | 3,867.22 mi (6,223.70 km) |
| Howard to Alijo | 3,911.83 mi (6,295.49 km) |
| Howard to Aljustrel | 4,009.08 mi (6,451.99 km) |
| Howard to Almada | 3,935.04 mi (6,332.83 km) |
| Howard to Almargem | 3,923.59 mi (6,314.40 km) |
| Howard to Almeirim | 3,939.54 mi (6,340.08 km) |
| Howard to Amadora | 3,929.64 mi (6,324.15 km) |
| Howard to Amarante | 3,886.29 mi (6,254.38 km) |
| Howard to Amares | 3,861.69 mi (6,214.80 km) |
| Howard to Amora | 3,938.86 mi (6,338.98 km) |
| Howard to Anadia | 3,901.18 mi (6,278.35 km) |
| Howard to Angra do Heroismo | 3,097.97 mi (4,985.71 km) |
| Howard to Ansiao | 3,920.58 mi (6,309.57 km) |
| Howard to Anta | 3,871.37 mi (6,230.37 km) |
