| Siena to Deville-les-Rouen | 647.59 mi (1,042.19 km) |
| Siena to Dieppe | 665.78 mi (1,071.46 km) |
| Siena to Digne-les-Bains | 260.04 mi (418.49 km) |
| Siena to Dijon | 412.61 mi (664.02 km) |
| Siena to Dinan | 733.52 mi (1,180.49 km) |
| Siena to Dinard | 739.04 mi (1,189.37 km) |
| Siena to Divonne-les-Bains | 329.57 mi (530.39 km) |
| Siena to Dole | 385.64 mi (620.62 km) |
| Siena to Dombasle-sur-Meurthe | 437.58 mi (704.22 km) |
| Siena to Domerat | 479.14 mi (771.10 km) |
| Siena to Domont | 583.42 mi (938.92 km) |
| Siena to Douai | 623.34 mi (1,003.17 km) |
| Siena to Douarnenez | 822.60 mi (1,323.85 km) |
| Siena to Douchy-les-Mines | 610.59 mi (982.65 km) |
| Siena to Dourdan | 574.00 mi (923.77 km) |
