| Smolyan to Delmenhorst | 1,087.97 mi (1,750.91 km) |
| Smolyan to Demmin | 1,006.12 mi (1,619.19 km) |
| Smolyan to Denkendorf | 893.83 mi (1,438.49 km) |
| Smolyan to Denzlingen | 935.23 mi (1,505.11 km) |
| Smolyan to Dessau-Rosslau | 919.57 mi (1,479.91 km) |
| Smolyan to Detmold | 1,031.36 mi (1,659.81 km) |
| Smolyan to Dettingen an der Erms | 887.37 mi (1,428.09 km) |
| Smolyan to Dieburg | 952.97 mi (1,533.65 km) |
| Smolyan to Diedorf | 824.15 mi (1,326.34 km) |
| Smolyan to Dielheim | 936.24 mi (1,506.73 km) |
| Smolyan to Diepholz | 1,076.93 mi (1,733.16 km) |
| Smolyan to Diessen am Ammersee | 797.34 mi (1,283.19 km) |
| Smolyan to Dietzenbach | 959.68 mi (1,544.45 km) |
| Smolyan to Diez | 1,001.38 mi (1,611.57 km) |
| Smolyan to Dillenburg | 1,004.59 mi (1,616.72 km) |
