| Smolyan to Dieppe | 1,268.68 mi (2,041.74 km) |
| Smolyan to Digne-les-Bains | 949.31 mi (1,527.77 km) |
| Smolyan to Dijon | 1,044.91 mi (1,681.62 km) |
| Smolyan to Dinan | 1,381.50 mi (2,223.31 km) |
| Smolyan to Dinard | 1,384.20 mi (2,227.65 km) |
| Smolyan to Divonne-les-Bains | 977.16 mi (1,572.59 km) |
| Smolyan to Dole | 1,019.43 mi (1,640.61 km) |
| Smolyan to Dombasle-sur-Meurthe | 1,014.92 mi (1,633.35 km) |
| Smolyan to Domerat | 1,146.19 mi (1,844.61 km) |
| Smolyan to Domont | 1,196.77 mi (1,926.01 km) |
| Smolyan to Douai | 1,196.16 mi (1,925.04 km) |
| Smolyan to Douarnenez | 1,481.53 mi (2,384.30 km) |
| Smolyan to Douchy-les-Mines | 1,181.55 mi (1,901.51 km) |
| Smolyan to Dourdan | 1,201.08 mi (1,932.95 km) |
| Smolyan to Draguignan | 935.76 mi (1,505.97 km) |
