| Cities | Distance |
|---|---|
| Siena to Dendermonde | 631.37 mi (1,016.10 km) |
| Siena to Dessel | 619.10 mi (996.35 km) |
| Siena to Destelbergen | 639.93 mi (1,029.86 km) |
| Siena to Deurne | 633.49 mi (1,019.50 km) |
| Siena to Diepenbeek | 593.06 mi (954.44 km) |
| Siena to Diest | 605.82 mi (974.98 km) |
| Siena to Diksmuide | 664.05 mi (1,068.69 km) |
| Siena to Dilbeek | 616.32 mi (991.87 km) |
| Siena to Dinant | 567.46 mi (913.24 km) |
| Siena to Dison | 566.26 mi (911.32 km) |
| Siena to Dour | 604.75 mi (973.25 km) |
| Siena to Drongen | 643.38 mi (1,035.42 km) |
| Siena to Duffel | 624.99 mi (1,005.83 km) |
| Siena to Durbuy | 559.32 mi (900.14 km) |
| Siena to Ecaussinnes-Lalaing | 603.13 mi (970.64 km) |