| Smolyan to Dornstadt | 861.29 mi (1,386.12 km) |
| Smolyan to Dorsten | 1,087.26 mi (1,749.77 km) |
| Smolyan to Dortmund | 1,063.78 mi (1,711.99 km) |
| Smolyan to Dorverden | 1,059.94 mi (1,705.81 km) |
| Smolyan to Dossenheim | 944.25 mi (1,519.63 km) |
| Smolyan to Dreieich | 962.24 mi (1,548.58 km) |
| Smolyan to Drensteinfurt | 1,064.87 mi (1,713.75 km) |
| Smolyan to Dresden | 835.62 mi (1,344.81 km) |
| Smolyan to Drochtersen | 1,094.94 mi (1,762.13 km) |
| Smolyan to Drolshagen | 1,034.72 mi (1,665.23 km) |
| Smolyan to Duderstadt | 966.99 mi (1,556.21 km) |
| Smolyan to Duisburg | 1,086.26 mi (1,748.17 km) |
| Smolyan to Dulmen | 1,082.54 mi (1,742.18 km) |
| Smolyan to Duren | 1,074.42 mi (1,729.11 km) |
| Smolyan to Durmersheim | 943.62 mi (1,518.62 km) |
