The road measures 6.86 miles long and would take a car obeying speed limits 9 minutes to travel its length.
The B4357 is a B Road and is located in the Zone 4 Highways Region.
This is a true long-distance route, journeying through numerous towns like Walton, Evenjobb, Evancoyd, PRESTEIGNE, and Whitton.
The road is located entirely within Powys.