| Fort Collins to Arcos de Valdevez | 4,725.75 mi (7,605.36 km) |
| Fort Collins to Arcozelo | 4,748.47 mi (7,641.93 km) |
| Fort Collins to Arganil | 4,807.39 mi (7,736.75 km) |
| Fort Collins to Arouca | 4,770.07 mi (7,676.68 km) |
| Fort Collins to Arruda dos Vinhos | 4,814.55 mi (7,748.27 km) |
| Fort Collins to Aveiro | 4,765.15 mi (7,668.77 km) |
| Fort Collins to Aver-o-Mar | 4,728.94 mi (7,610.49 km) |
| Fort Collins to Aves | 4,747.18 mi (7,639.86 km) |
| Fort Collins to Azambuja | 4,819.79 mi (7,756.70 km) |
| Fort Collins to Baiao | 4,769.49 mi (7,675.75 km) |
| Fort Collins to Barcelos | 4,730.79 mi (7,613.47 km) |
| Fort Collins to Barreiro | 4,827.52 mi (7,769.14 km) |
| Fort Collins to Batalha | 4,798.80 mi (7,722.92 km) |
| Fort Collins to Beja | 4,905.08 mi (7,893.97 km) |
| Fort Collins to Belas | 4,814.17 mi (7,747.66 km) |
