| Fort Collins to Dormagen | 4,895.10 mi (7,877.91 km) |
| Fort Collins to Dornstadt | 5,120.99 mi (8,241.44 km) |
| Fort Collins to Dorsten | 4,874.12 mi (7,844.13 km) |
| Fort Collins to Dortmund | 4,896.79 mi (7,880.62 km) |
| Fort Collins to Dorverden | 4,889.90 mi (7,869.53 km) |
| Fort Collins to Dossenheim | 5,032.56 mi (8,099.12 km) |
| Fort Collins to Dreieich | 5,007.40 mi (8,058.63 km) |
| Fort Collins to Drensteinfurt | 4,892.60 mi (7,873.89 km) |
| Fort Collins to Dresden | 5,113.89 mi (8,230.01 km) |
| Fort Collins to Drochtersen | 4,854.57 mi (7,812.68 km) |
| Fort Collins to Drolshagen | 4,928.83 mi (7,932.18 km) |
| Fort Collins to Duderstadt | 4,984.93 mi (8,022.48 km) |
| Fort Collins to Duisburg | 4,877.98 mi (7,850.35 km) |
| Fort Collins to Dulmen | 4,876.29 mi (7,847.62 km) |
| Fort Collins to Duren | 4,898.03 mi (7,882.62 km) |
