The road measures 23.53 miles long and would take a car obeying speed limits 35 minutes to travel its length.
The A499 is a A Road and is located in the Zone 4 Highways Region.
This is a true long-distance route, journeying through numerous towns like Abersoch, Llanbedrog, Penrhos, PWLLHELI, Llwyn Hudol, Plas Gwyn, Y Ffor, Llanaelhaearn, Trefor, Clynnogfawr, Gyrn Goch, Aberdesach, CAERNARFON, Pontllyfni, Llandwrog, Llanwnda, and Bethesda Bach.
The road connects Gwynedd and Gwynedd.