| Glenn Dale to Alenquer | 3,548.03 mi (5,710.00 km) |
| Glenn Dale to Alfena | 3,515.08 mi (5,656.97 km) |
| Glenn Dale to Alijo | 3,564.81 mi (5,737.01 km) |
| Glenn Dale to Aljustrel | 3,621.35 mi (5,828.00 km) |
| Glenn Dale to Almada | 3,550.99 mi (5,714.76 km) |
| Glenn Dale to Almargem | 3,540.86 mi (5,698.47 km) |
| Glenn Dale to Almeirim | 3,563.75 mi (5,735.31 km) |
| Glenn Dale to Amadora | 3,545.83 mi (5,706.46 km) |
| Glenn Dale to Amarante | 3,536.51 mi (5,691.47 km) |
| Glenn Dale to Amares | 3,514.83 mi (5,656.57 km) |
| Glenn Dale to Amora | 3,554.40 mi (5,720.25 km) |
| Glenn Dale to Anadia | 3,540.15 mi (5,697.32 km) |
| Glenn Dale to Angra do Heroismo | 2,635.41 mi (4,241.28 km) |
| Glenn Dale to Ansiao | 3,553.67 mi (5,719.08 km) |
| Glenn Dale to Anta | 3,516.09 mi (5,658.60 km) |
