| Letterkenny to Dillenburg | 726.68 mi (1,169.47 km) |
| Letterkenny to Dillingen | 890.52 mi (1,433.16 km) |
| Letterkenny to Dillingen | 722.81 mi (1,163.26 km) |
| Letterkenny to Dingolfing | 963.47 mi (1,550.56 km) |
| Letterkenny to Dinkelsbuhl | 864.75 mi (1,391.69 km) |
| Letterkenny to Dinklage | 664.24 mi (1,069.00 km) |
| Letterkenny to Dinslaken | 640.16 mi (1,030.24 km) |
| Letterkenny to Dippoldiswalde | 929.77 mi (1,496.32 km) |
| Letterkenny to Ditzingen | 828.64 mi (1,333.57 km) |
| Letterkenny to Dobeln | 901.31 mi (1,450.51 km) |
| Letterkenny to Doberlug-Kirchhain | 905.11 mi (1,456.63 km) |
| Letterkenny to Donaueschingen | 846.51 mi (1,362.32 km) |
| Letterkenny to Donauworth | 897.38 mi (1,444.19 km) |
| Letterkenny to Donzdorf | 861.90 mi (1,387.09 km) |
| Letterkenny to Dorfen | 965.02 mi (1,553.05 km) |
