|To:||Capel Curig (SH720581)|
|Length:||17.9 miles (28.8 km)|
|Meets:||B4419, A487, B4366, A4244, A498, A5|
|Route outline (key)|
The A4086 passes through some of the most memorable and famous parts of Snowdonia in North Wales, and is a popular tourist route. Unlike many 4-digit A-roads, its alignment and routing have hardly changed since road numbers were first allocated.
It starts on a B-road in the centre of Caernarfon, then meets the A487 at a GSJ one block east; the A4086 starts on the old main road through town and was not moved when the relief road was built. It heads east along the valley towards Llyn Padarn, meeting the A4244 on the way. It runs along the south of the lake to Llanberis, where the famous Snowdon Mountain Railway departs towards the summit, while just across the road is the station for the less well-known Llanberis Lake Railway.
After this, the road runs along Llyn Peris and then starts the climb up the Llanberis Pass into the mountains. The views of Snowdon in the background and mountains on all sides can be spectacular if the cloud cover affords it. At the top of the pass is Pen-y-Pass, home of a youth hostel and café and the start of one of the most popular ways of getting up Snowdon on foot.
At Pen-y-Gwryd, about a mile further on, the A4086 reaches a T-junction where the right-hand road is the northern end of the A498 while our road turns left and begins a very flat and fast drive down to Capel Curig, where the A4086 terminates on the A5.
An amended OpenStreetMap trace for this route awaits uploading to the SABRE Wiki.