The road measures 4.95 miles long and would take a car obeying speed limits 11 minutes to travel its length.
The B4489 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 Llangyfelach, Morriston, Clase, Tirdeunaw, Treboeth, Brynhyfryd, Manselton, and SWANSEA.
The road is located entirely within West Glamorgan.