| Merthyr Tudful to Hamilton | 280.02 mi (450.65 km) |
| Merthyr Tudful to Hammersmith | 136.44 mi (219.58 km) |
| Merthyr Tudful to Hampton | 131.15 mi (211.07 km) |
| Merthyr Tudful to Hamworthy | 92.12 mi (148.26 km) |
| Merthyr Tudful to Handsworth | 139.78 mi (224.95 km) |
| Merthyr Tudful to Hanwell | 131.38 mi (211.44 km) |
| Merthyr Tudful to Harborne | 78.27 mi (125.97 km) |
| Merthyr Tudful to Harlow | 149.94 mi (241.30 km) |
| Merthyr Tudful to Harpenden | 129.43 mi (208.29 km) |
| Merthyr Tudful to Harrogate | 173.29 mi (278.89 km) |
| Merthyr Tudful to Harrow | 130.38 mi (209.83 km) |
| Merthyr Tudful to Harrow on the Hill | 131.10 mi (210.99 km) |
| Merthyr Tudful to Harrow Weald | 130.56 mi (210.11 km) |
| Merthyr Tudful to Hartlepool | 222.47 mi (358.03 km) |
| Merthyr Tudful to Harwich | 198.66 mi (319.72 km) |
