| Fort Collins to Cutrofiano | 5,821.32 mi (9,368.51 km) |
| Fort Collins to Dalmine | 5,245.91 mi (8,442.48 km) |
| Fort Collins to Deruta | 5,474.97 mi (8,811.12 km) |
| Fort Collins to Desenzano del Garda | 5,286.78 mi (8,508.26 km) |
| Fort Collins to Desio | 5,234.32 mi (8,423.82 km) |
| Fort Collins to Dolianova | 5,537.03 mi (8,910.98 km) |
| Fort Collins to Dolo | 5,341.04 mi (8,595.58 km) |
| Fort Collins to Domodossola | 5,178.32 mi (8,333.70 km) |
| Fort Collins to Dorgali | 5,506.86 mi (8,862.44 km) |
| Fort Collins to Dueville | 5,313.12 mi (8,550.63 km) |
| Fort Collins to Eboli | 5,687.36 mi (9,152.93 km) |
| Fort Collins to Elmas | 5,537.74 mi (8,912.13 km) |
| Fort Collins to Empoli | 5,387.40 mi (8,670.18 km) |
| Fort Collins to Enna | 5,817.24 mi (9,361.94 km) |
| Fort Collins to Eraclea | 5,353.58 mi (8,615.75 km) |
