| Holyhead to Deville-les-Rouen | 360.89 mi (580.80 km) |
| Holyhead to Dieppe | 338.79 mi (545.22 km) |
| Holyhead to Digne-les-Bains | 805.07 mi (1,295.64 km) |
| Holyhead to Dijon | 592.93 mi (954.22 km) |
| Holyhead to Dinan | 353.67 mi (569.18 km) |
| Holyhead to Dinard | 341.88 mi (550.20 km) |
| Holyhead to Divonne-les-Bains | 677.87 mi (1,090.92 km) |
| Holyhead to Dole | 619.32 mi (996.70 km) |
| Holyhead to Dombasle-sur-Meurthe | 576.18 mi (927.27 km) |
| Holyhead to Domerat | 576.02 mi (927.02 km) |
| Holyhead to Domont | 422.04 mi (679.21 km) |
| Holyhead to Douai | 386.49 mi (621.99 km) |
| Holyhead to Douarnenez | 360.69 mi (580.47 km) |
| Holyhead to Douchy-les-Mines | 400.61 mi (644.73 km) |
| Holyhead to Dourdan | 438.75 mi (706.10 km) |
