| Hertford to Cutrofiano | 1,186.33 mi (1,909.22 km) |
| Hertford to Dalmine | 611.36 mi (983.88 km) |
| Hertford to Deruta | 841.77 mi (1,354.69 km) |
| Hertford to Desenzano del Garda | 651.48 mi (1,048.46 km) |
| Hertford to Desio | 600.69 mi (966.72 km) |
| Hertford to Dolianova | 965.73 mi (1,554.19 km) |
| Hertford to Dolo | 706.89 mi (1,137.63 km) |
| Hertford to Domodossola | 545.40 mi (877.74 km) |
| Hertford to Dorgali | 917.76 mi (1,476.99 km) |
| Hertford to Dueville | 678.56 mi (1,092.04 km) |
| Hertford to Eboli | 1,054.35 mi (1,696.81 km) |
| Hertford to Elmas | 970.17 mi (1,561.34 km) |
| Hertford to Empoli | 756.02 mi (1,216.70 km) |
| Hertford to Enna | 1,205.40 mi (1,939.91 km) |
| Hertford to Eraclea | 721.55 mi (1,161.23 km) |
