| Letterkenny to Dormagen | 658.63 mi (1,059.96 km) |
| Letterkenny to Dornstadt | 875.38 mi (1,408.79 km) |
| Letterkenny to Dorsten | 646.11 mi (1,039.81 km) |
| Letterkenny to Dortmund | 669.83 mi (1,077.99 km) |
| Letterkenny to Dorverden | 703.44 mi (1,132.07 km) |
| Letterkenny to Dossenheim | 788.90 mi (1,269.61 km) |
| Letterkenny to Dreieich | 768.70 mi (1,237.10 km) |
| Letterkenny to Drensteinfurt | 671.97 mi (1,081.43 km) |
| Letterkenny to Dresden | 927.98 mi (1,493.43 km) |
| Letterkenny to Drochtersen | 692.80 mi (1,114.95 km) |
| Letterkenny to Drolshagen | 696.88 mi (1,121.53 km) |
| Letterkenny to Duderstadt | 778.17 mi (1,252.34 km) |
| Letterkenny to Duisburg | 645.48 mi (1,038.80 km) |
| Letterkenny to Dulmen | 653.07 mi (1,051.02 km) |
| Letterkenny to Duren | 656.63 mi (1,056.74 km) |
