| Fort Collins to Alenquer | 4,813.99 mi (7,747.36 km) |
| Fort Collins to Alfena | 4,745.90 mi (7,637.78 km) |
| Fort Collins to Alijo | 4,788.41 mi (7,706.21 km) |
| Fort Collins to Aljustrel | 4,897.62 mi (7,881.96 km) |
| Fort Collins to Almada | 4,822.98 mi (7,761.84 km) |
| Fort Collins to Almargem | 4,811.23 mi (7,742.93 km) |
| Fort Collins to Almeirim | 4,825.10 mi (7,765.25 km) |
| Fort Collins to Amadora | 4,817.56 mi (7,753.11 km) |
| Fort Collins to Amarante | 4,764.01 mi (7,666.94 km) |
| Fort Collins to Amares | 4,738.63 mi (7,626.09 km) |
| Fort Collins to Amora | 4,826.90 mi (7,768.15 km) |
| Fort Collins to Anadia | 4,782.49 mi (7,696.67 km) |
| Fort Collins to Angra do Heroismo | 4,002.57 mi (6,441.52 km) |
| Fort Collins to Ansiao | 4,803.59 mi (7,730.63 km) |
| Fort Collins to Anta | 4,751.04 mi (7,646.06 km) |
