| Fort Collins to Droylsden | 4,496.16 mi (7,235.86 km) |
| Fort Collins to Dudley | 4,537.56 mi (7,302.50 km) |
| Fort Collins to Dukinfield | 4,499.04 mi (7,240.51 km) |
| Fort Collins to Dumbarton | 4,321.23 mi (6,954.35 km) |
| Fort Collins to Dumfries | 4,386.05 mi (7,058.67 km) |
| Fort Collins to Dunbar | 4,385.45 mi (7,057.69 km) |
| Fort Collins to Dunblane | 4,331.91 mi (6,971.54 km) |
| Fort Collins to Dundee | 4,353.32 mi (7,006.00 km) |
| Fort Collins to Dunfermline | 4,353.17 mi (7,005.75 km) |
| Fort Collins to Dunstable | 4,616.52 mi (7,429.57 km) |
| Fort Collins to Durham | 4,464.02 mi (7,184.15 km) |
| Fort Collins to Ealing | 4,639.44 mi (7,466.46 km) |
| Fort Collins to Earlestown | 4,480.91 mi (7,211.32 km) |
| Fort Collins to Earley | 4,621.13 mi (7,437.00 km) |
| Fort Collins to East Barnet | 4,638.85 mi (7,465.51 km) |
