| Letterkenny to Coswig | 853.28 mi (1,373.21 km) |
| Letterkenny to Cottbus | 931.59 mi (1,499.24 km) |
| Letterkenny to Crailsheim | 853.00 mi (1,372.76 km) |
| Letterkenny to Cremlingen | 773.73 mi (1,245.20 km) |
| Letterkenny to Crimmitschau | 882.04 mi (1,419.51 km) |
| Letterkenny to Cuxhaven | 662.84 mi (1,066.74 km) |
| Letterkenny to Dachau | 938.77 mi (1,510.80 km) |
| Letterkenny to Dallgow-Doberitz | 861.66 mi (1,386.71 km) |
| Letterkenny to Damme | 670.34 mi (1,078.80 km) |
| Letterkenny to Darmstadt | 771.75 mi (1,242.02 km) |
| Letterkenny to Dassel | 747.65 mi (1,203.23 km) |
| Letterkenny to Datteln | 660.81 mi (1,063.47 km) |
| Letterkenny to Dautphe | 732.57 mi (1,178.96 km) |
| Letterkenny to Deggendorf | 973.35 mi (1,566.46 km) |
| Letterkenny to Delbruck | 704.88 mi (1,134.39 km) |
