| Harmanli to Darlington | 1,518.54 mi (2,443.86 km) |
| Harmanli to Dartford | 1,372.90 mi (2,209.47 km) |
| Harmanli to Darton | 1,492.85 mi (2,402.52 km) |
| Harmanli to Darwen | 1,531.16 mi (2,464.17 km) |
| Harmanli to Daventry | 1,446.87 mi (2,328.51 km) |
| Harmanli to Davyhulme | 1,521.80 mi (2,449.11 km) |
| Harmanli to Dawlish | 1,512.12 mi (2,433.52 km) |
| Harmanli to Deal | 1,319.82 mi (2,124.05 km) |
| Harmanli to Denby Dale | 1,497.21 mi (2,409.52 km) |
| Harmanli to Denton | 1,511.90 mi (2,433.17 km) |
| Harmanli to Derby | 1,474.50 mi (2,372.97 km) |
| Harmanli to Derry | 1,746.01 mi (2,809.94 km) |
| Harmanli to Desborough | 1,437.23 mi (2,312.99 km) |
| Harmanli to Devizes | 1,462.52 mi (2,353.69 km) |
| Harmanli to Dewsbury | 1,499.37 mi (2,413.00 km) |
