The road measures 11.81 miles long and would take a car obeying speed limits 23 minutes to travel its length.
The B4579 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 Glyn Ceiriog, Llwynmawr, Selattyn, Pant Glas, Pentre Pant, Brogyntyn, and OSWESTRY.
The road connects Clwyd and Shropshire.