| Glenn Dale to Arcos de Valdevez | 3,504.99 mi (5,640.73 km) |
| Glenn Dale to Arcozelo | 3,514.16 mi (5,655.50 km) |
| Glenn Dale to Arganil | 3,564.27 mi (5,736.14 km) |
| Glenn Dale to Arouca | 3,536.39 mi (5,691.28 km) |
| Glenn Dale to Arruda dos Vinhos | 3,547.35 mi (5,708.91 km) |
| Glenn Dale to Aveiro | 3,524.43 mi (5,672.02 km) |
| Glenn Dale to Aver-o-Mar | 3,499.13 mi (5,631.31 km) |
| Glenn Dale to Aves | 3,520.87 mi (5,666.29 km) |
| Glenn Dale to Azambuja | 3,555.00 mi (5,721.21 km) |
| Glenn Dale to Baiao | 3,540.68 mi (5,698.17 km) |
| Glenn Dale to Barcelos | 3,503.67 mi (5,638.61 km) |
| Glenn Dale to Barreiro | 3,555.90 mi (5,722.67 km) |
| Glenn Dale to Batalha | 3,542.73 mi (5,701.47 km) |
| Glenn Dale to Beja | 3,632.17 mi (5,845.42 km) |
| Glenn Dale to Belas | 3,542.80 mi (5,701.58 km) |
