At Pen-y-Gwryd, the A4086 Llanberis Pass route bears off to the north. The A498 descends from a 277 m (909 ft.) summit at Pen-y-Gwryd and runs south west through the village of Beddgelert and the Aberglaslyn Pass, where it overlaps the A4085. The A498 then passes through Tremadog, overlapping the A487 for a short length before passing under the Cambrian Coast railway and terminating at Penamser on the A497 about a mile west of Porthmadog. At its northern end, the road forms a link via the A4086 with the A5 at Capel Curig, forming a useful holiday route to the Beddgelert/Porthmadog area. At the junctions, the A4086 to Llanberis is the minor road at Pen-y-Gwryd, while the A498 is the minor road at Beddgelert. At Pont Aberglaslyn, the A4085 is the minor road diverging to Penrhyndeudraeth and at Tremadog, the A498 is the major road. The junction west of Tremadog is a roundabout and at Penamser, the A498 is the minor road.