| Fort Collins to Argentona | 5,174.91 mi (8,328.22 km) |
| Fort Collins to Arico el Nuevo | 4,912.86 mi (7,906.49 km) |
| Fort Collins to Armilla | 5,126.36 mi (8,250.09 km) |
| Fort Collins to Arnedo | 4,968.34 mi (7,995.77 km) |
| Fort Collins to Arona | 4,907.64 mi (7,898.08 km) |
| Fort Collins to Arrecife | 5,023.74 mi (8,084.93 km) |
| Fort Collins to Arrigorriaga | 4,894.48 mi (7,876.91 km) |
| Fort Collins to Arroyomolinos | 4,979.37 mi (8,013.52 km) |
| Fort Collins to Arteijo | 4,663.49 mi (7,505.16 km) |
| Fort Collins to Arucas | 4,963.41 mi (7,987.84 km) |
| Fort Collins to Aspe | 5,192.95 mi (8,357.24 km) |
| Fort Collins to Astorga | 4,798.11 mi (7,721.80 km) |
| Fort Collins to Atarfe | 5,120.06 mi (8,239.94 km) |
| Fort Collins to Avila | 4,930.63 mi (7,935.08 km) |
| Fort Collins to Aviles | 4,759.20 mi (7,659.19 km) |
