| Merthyr Tudful to Hisarcik | 1,778.82 mi (2,862.73 km) |
| Merthyr Tudful to Hizan | 2,377.86 mi (3,826.80 km) |
| Merthyr Tudful to Hopa | 2,205.20 mi (3,548.93 km) |
| Merthyr Tudful to Huyuk | 1,934.16 mi (3,112.74 km) |
| Merthyr Tudful to Idil | 2,393.44 mi (3,851.87 km) |
| Merthyr Tudful to Igdir | 2,376.15 mi (3,824.05 km) |
| Merthyr Tudful to Ihsaniye | 1,837.21 mi (2,956.71 km) |
| Merthyr Tudful to Ilic | 2,161.47 mi (3,478.55 km) |
| Merthyr Tudful to Ilica | 2,249.49 mi (3,620.21 km) |
| Merthyr Tudful to Incesu | 2,053.93 mi (3,305.49 km) |
| Merthyr Tudful to Incirliova | 1,781.06 mi (2,866.35 km) |
| Merthyr Tudful to Inebolu | 1,855.65 mi (2,986.38 km) |
| Merthyr Tudful to Inegol | 1,754.11 mi (2,822.97 km) |
| Merthyr Tudful to Ipsala | 1,589.07 mi (2,557.36 km) |
| Merthyr Tudful to Iskenderun | 2,185.78 mi (3,517.68 km) |
