Distance from Letchworth Garden City to Merthyr Tydfil

The distance from Letchworth Garden City to Merthyr Tydfil is 285 km (or 178 mi). The estimated driving time for the trip is 3h 10min and the main road for this route is the M4. In a straight line, the distance between Letchworth Garden City and Merthyr Tydfil is 219 km (137 mi).