| Houghton Regis to Curtea de Arges | 1,236.63 mi (1,990.16 km) |
| Houghton Regis to Dabuleni | 1,262.89 mi (2,032.43 km) |
| Houghton Regis to Darabani | 1,222.58 mi (1,967.56 km) |
| Houghton Regis to Darmanesti | 1,270.71 mi (2,045.02 km) |
| Houghton Regis to Dej | 1,135.30 mi (1,827.09 km) |
| Houghton Regis to Deva | 1,137.09 mi (1,829.97 km) |
| Houghton Regis to Dolhasca | 1,244.18 mi (2,002.32 km) |
| Houghton Regis to Dorohoi | 1,220.54 mi (1,964.27 km) |
| Houghton Regis to Draganesti-Olt | 1,266.48 mi (2,038.20 km) |
| Houghton Regis to Dragasani | 1,236.74 mi (1,990.34 km) |
| Houghton Regis to Drobeta-Turnu Severin | 1,171.51 mi (1,885.36 km) |
| Houghton Regis to Fagaras | 1,224.42 mi (1,970.51 km) |
| Houghton Regis to Falticeni | 1,230.18 mi (1,979.79 km) |
| Houghton Regis to Fetesti | 1,394.23 mi (2,243.80 km) |
| Houghton Regis to Filiasi | 1,216.11 mi (1,957.14 km) |
