| Helensburgh to Deville-les-Rouen | 512.55 mi (824.86 km) |
| Helensburgh to Dieppe | 485.36 mi (781.12 km) |
| Helensburgh to Digne-les-Bains | 954.26 mi (1,535.73 km) |
| Helensburgh to Dijon | 730.55 mi (1,175.70 km) |
| Helensburgh to Dinan | 534.50 mi (860.20 km) |
| Helensburgh to Dinard | 522.41 mi (840.74 km) |
| Helensburgh to Divonne-les-Bains | 814.83 mi (1,311.34 km) |
| Helensburgh to Dole | 755.31 mi (1,215.55 km) |
| Helensburgh to Dombasle-sur-Meurthe | 691.12 mi (1,112.25 km) |
| Helensburgh to Domerat | 736.74 mi (1,185.67 km) |
| Helensburgh to Domont | 566.17 mi (911.16 km) |
| Helensburgh to Douai | 506.06 mi (814.43 km) |
| Helensburgh to Douarnenez | 547.79 mi (881.58 km) |
| Helensburgh to Douchy-les-Mines | 518.23 mi (834.01 km) |
| Helensburgh to Dourdan | 590.08 mi (949.64 km) |
