| South Houston to Alenquer | 4,775.98 mi (7,686.20 km) |
| South Houston to Alfena | 4,744.42 mi (7,635.40 km) |
| South Houston to Alijo | 4,794.16 mi (7,715.45 km) |
| South Houston to Aljustrel | 4,848.22 mi (7,802.46 km) |
| South Houston to Almada | 4,778.44 mi (7,690.16 km) |
| South Houston to Almargem | 4,768.49 mi (7,674.14 km) |
| South Houston to Almeirim | 4,791.99 mi (7,711.97 km) |
| South Houston to Amadora | 4,773.33 mi (7,681.93 km) |
| South Houston to Amarante | 4,765.86 mi (7,669.91 km) |
| South Houston to Amares | 4,744.16 mi (7,634.99 km) |
| South Houston to Amora | 4,781.81 mi (7,695.57 km) |
| South Houston to Anadia | 4,769.29 mi (7,675.44 km) |
| South Houston to Angra do Heroismo | 3,850.19 mi (6,196.28 km) |
| South Houston to Ansiao | 4,782.54 mi (7,696.76 km) |
| South Houston to Anta | 4,745.40 mi (7,636.98 km) |
