The road measures 9.10 miles long and would take a car obeying speed limits 13 minutes to travel its length.
The B4354 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 Boduan, Pentre Uchaf, Llannor, Y Ffor, and Chwilog.
The road is located entirely within Gwynedd.