| Cities | Distance |
|---|---|
| Holyhead to Dendermonde | 401.74 mi (646.54 km) |
| Holyhead to Dessel | 436.03 mi (701.72 km) |
| Holyhead to Destelbergen | 389.58 mi (626.96 km) |
| Holyhead to Deurne | 410.32 mi (660.34 km) |
| Holyhead to Diepenbeek | 457.15 mi (735.72 km) |
| Holyhead to Diest | 440.45 mi (708.84 km) |
| Holyhead to Diksmuide | 354.33 mi (570.24 km) |
| Holyhead to Dilbeek | 413.86 mi (666.04 km) |
| Holyhead to Dinant | 458.59 mi (738.03 km) |
| Holyhead to Dison | 482.93 mi (777.20 km) |
| Holyhead to Dour | 411.20 mi (661.76 km) |
| Holyhead to Drongen | 384.42 mi (618.66 km) |
| Holyhead to Duffel | 416.04 mi (669.55 km) |
| Holyhead to Durbuy | 476.22 mi (766.41 km) |
| Holyhead to Ecaussinnes-Lalaing | 420.25 mi (676.32 km) |