| Helston to Deville-les-Rouen | 285.18 mi (458.95 km) |
| Helston to Dieppe | 282.15 mi (454.07 km) |
| Helston to Digne-les-Bains | 680.76 mi (1,095.58 km) |
| Helston to Dijon | 506.37 mi (814.92 km) |
| Helston to Dinan | 184.29 mi (296.58 km) |
| Helston to Dinard | 176.38 mi (283.86 km) |
| Helston to Divonne-les-Bains | 584.69 mi (940.96 km) |
| Helston to Dole | 533.17 mi (858.06 km) |
| Helston to Dombasle-sur-Meurthe | 532.13 mi (856.38 km) |
| Helston to Domerat | 442.11 mi (711.51 km) |
| Helston to Domont | 348.24 mi (560.44 km) |
| Helston to Douai | 369.30 mi (594.34 km) |
| Helston to Douarnenez | 145.09 mi (233.50 km) |
| Helston to Douchy-les-Mines | 383.18 mi (616.68 km) |
| Helston to Dourdan | 345.27 mi (555.66 km) |
