| Fort Collins to Amelia | 5,496.76 mi (8,846.18 km) |
| Fort Collins to Anagni | 5,563.49 mi (8,953.57 km) |
| Fort Collins to Ancona | 5,480.74 mi (8,820.40 km) |
| Fort Collins to Andria | 5,698.97 mi (9,171.60 km) |
| Fort Collins to Angri | 5,664.29 mi (9,115.80 km) |
| Fort Collins to Anguillara Sabazia | 5,514.98 mi (8,875.50 km) |
| Fort Collins to Anzio | 5,559.79 mi (8,947.61 km) |
| Fort Collins to Anzola dell'Emilia | 5,354.81 mi (8,617.74 km) |
| Fort Collins to Aosta | 5,162.56 mi (8,308.33 km) |
| Fort Collins to Apricena | 5,640.84 mi (9,078.05 km) |
| Fort Collins to Aprilia | 5,553.68 mi (8,937.78 km) |
| Fort Collins to Aradeo | 5,818.19 mi (9,363.47 km) |
| Fort Collins to Aragona | 5,801.44 mi (9,336.52 km) |
| Fort Collins to Arco | 5,276.64 mi (8,491.93 km) |
| Fort Collins to Arcola | 5,331.02 mi (8,579.44 km) |
