| Fort Collins to Deville-les-Rouen | 4,773.08 mi (7,681.52 km) |
| Fort Collins to Dieppe | 4,754.75 mi (7,652.03 km) |
| Fort Collins to Digne-les-Bains | 5,201.39 mi (8,370.83 km) |
| Fort Collins to Dijon | 5,008.06 mi (8,059.69 km) |
| Fort Collins to Dinan | 4,704.97 mi (7,571.92 km) |
| Fort Collins to Dinard | 4,697.19 mi (7,559.40 km) |
| Fort Collins to Divonne-les-Bains | 5,091.99 mi (8,194.77 km) |
| Fort Collins to Dole | 5,034.94 mi (8,102.96 km) |
| Fort Collins to Dombasle-sur-Meurthe | 4,993.78 mi (8,036.72 km) |
| Fort Collins to Domerat | 4,962.72 mi (7,986.73 km) |
| Fort Collins to Domont | 4,837.05 mi (7,784.48 km) |
| Fort Collins to Douai | 4,803.90 mi (7,731.13 km) |
| Fort Collins to Douarnenez | 4,635.56 mi (7,460.22 km) |
| Fort Collins to Douchy-les-Mines | 4,817.62 mi (7,753.22 km) |
| Fort Collins to Dourdan | 4,847.85 mi (7,801.86 km) |
