| Houghton Regis to Dobrova | 786.71 mi (1,266.09 km) |
| Houghton Regis to Dobrovnik | 840.05 mi (1,351.93 km) |
| Houghton Regis to Dobrovo | 755.09 mi (1,215.21 km) |
| Houghton Regis to Dol | 794.11 mi (1,278.00 km) |
| Houghton Regis to Dolenjske Toplice | 823.88 mi (1,325.90 km) |
| Houghton Regis to Domzale | 790.21 mi (1,271.72 km) |
| Houghton Regis to Dornava | 832.24 mi (1,339.36 km) |
| Houghton Regis to Dragomer | 786.87 mi (1,266.34 km) |
| Houghton Regis to Dravograd | 789.36 mi (1,270.35 km) |
| Houghton Regis to Gorenja Vas | 774.12 mi (1,245.83 km) |
| Houghton Regis to Gorisnica | 835.47 mi (1,344.56 km) |
| Houghton Regis to Gornja Radgona | 824.88 mi (1,327.52 km) |
| Houghton Regis to Gornji Grad | 792.15 mi (1,274.85 km) |
| Houghton Regis to Gornji Petrovci | 829.23 mi (1,334.52 km) |
| Houghton Regis to Grad | 824.69 mi (1,327.22 km) |
