| Houghton Regis to Hisarcik | 1,666.34 mi (2,681.71 km) |
| Houghton Regis to Hizan | 2,257.91 mi (3,633.75 km) |
| Houghton Regis to Hopa | 2,083.88 mi (3,353.69 km) |
| Houghton Regis to Huyuk | 1,821.23 mi (2,930.99 km) |
| Houghton Regis to Idil | 2,274.26 mi (3,660.07 km) |
| Houghton Regis to Igdir | 2,254.86 mi (3,628.84 km) |
| Houghton Regis to Ihsaniye | 1,723.90 mi (2,774.35 km) |
| Houghton Regis to Ilic | 2,042.27 mi (3,286.71 km) |
| Houghton Regis to Ilica | 2,129.00 mi (3,426.29 km) |
| Houghton Regis to Incesu | 1,937.34 mi (3,117.85 km) |
| Houghton Regis to Incirliova | 1,672.54 mi (2,691.69 km) |
| Houghton Regis to Inebolu | 1,736.56 mi (2,794.73 km) |
| Houghton Regis to Inegol | 1,640.14 mi (2,639.54 km) |
| Houghton Regis to Ipsala | 1,476.83 mi (2,376.73 km) |
| Houghton Regis to Iskenderun | 2,070.63 mi (3,332.35 km) |
