| Helensburgh to Cutrofiano | 1,511.87 mi (2,433.13 km) |
| Helensburgh to Dalmine | 947.17 mi (1,524.32 km) |
| Helensburgh to Deruta | 1,177.93 mi (1,895.69 km) |
| Helensburgh to Desenzano del Garda | 984.00 mi (1,583.60 km) |
| Helensburgh to Desio | 938.32 mi (1,510.08 km) |
| Helensburgh to Dolianova | 1,313.30 mi (2,113.55 km) |
| Helensburgh to Dolo | 1,032.07 mi (1,660.95 km) |
| Helensburgh to Domodossola | 884.56 mi (1,423.57 km) |
| Helensburgh to Dorgali | 1,265.05 mi (2,035.90 km) |
| Helensburgh to Dueville | 1,005.04 mi (1,617.45 km) |
| Helensburgh to Eboli | 1,389.41 mi (2,236.04 km) |
| Helensburgh to Elmas | 1,317.73 mi (2,120.68 km) |
| Helensburgh to Empoli | 1,094.76 mi (1,761.84 km) |
| Helensburgh to Enna | 1,549.01 mi (2,492.89 km) |
| Helensburgh to Eraclea | 1,042.41 mi (1,677.60 km) |
