| Merthyr Tudful to Wymondham | 198.84 mi (320.01 km) |
| Merthyr Tudful to Wythenshawe | 123.16 mi (198.21 km) |
| Merthyr Tudful to Yate | 43.77 mi (70.43 km) |
| Merthyr Tudful to Yatton | 34.25 mi (55.12 km) |
| Merthyr Tudful to Yaxley | 142.71 mi (229.67 km) |
| Merthyr Tudful to Yeadon | 162.96 mi (262.26 km) |
| Merthyr Tudful to Yeovil | 63.73 mi (102.56 km) |
| Merthyr Tudful to Yiewsley | 125.68 mi (202.27 km) |
| Merthyr Tudful to York | 180.74 mi (290.88 km) |
| Merthyr Tudful to Ystrad Mynach | 9.14 mi (14.70 km) |
| Merthyr Tudful to Abbeville (Louisiana) | 4,571.84 mi (7,357.66 km) |
| Merthyr Tudful to Aberdeen (Maryland) | 3,464.28 mi (5,575.22 km) |
| Merthyr Tudful to Aberdeen (South Dakota) | 4,047.97 mi (6,514.57 km) |
| Merthyr Tudful to Aberdeen (Washington) | 4,760.20 mi (7,660.80 km) |
| Merthyr Tudful to Abilene (Texas) | 4,745.65 mi (7,637.39 km) |
