The road measures 13.31 miles long and would take a car obeying speed limits 20 minutes to travel its length.
The B4300 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 CARMARTHEN, Llangunnor, Capel Dewi, Nantgaredig, Llanarthney, Golden Grove, and Ffairfach.
The road is located entirely within Dyfed.