The road measures 23.63 miles long and would take a car obeying speed limits 37 minutes to travel its length.
The B4348 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 Hay-on-Wye, Westbrook, Dorstone, Peterchurch, Vowchurch, Kingstone, Allensmore, Thruxton, Tram Inn, Much Dewchurch, Wormelow, Llanwarne, and Llandinabo.
The road connects Powys and Herefordshire.