We drove this route after a long weekend with the SW Owners Group in September.
We could have taken the faster A487 via Porthmadog but we had time to spare and wanted a more scenic drive. We were heading for Bristol but you could use parts of it to reach a different destination:
Take the A4085 out of Caernarfon heading for Beddgelert. The first few miles of road will take you through the suburbs of town but after a few miles you will soon be in the foothills of Snowdonia National Park passing through open countryside and forested stretches.
At Beddgelert take the right turn over the bridge and follow the A498 alongside the river for roughly 1.5 miles. Then look out for a left turn over a small bridge signed Dolgellau 28 miles to go back onto the A4085. Another twisting forest road.
After 4 miles take the B4410 on the left signed Rhyd. At the T-junction by the Oakley Arms turn left onto the A487 towards Dolgellau. Continue on the road which eventually becomes the A470.
Follow the A470 for 32 miles taking the 1st exit at the roundabout towards Llanguring to stay on the A470 for another 5.5 miles.
At the Winnstay Arms turn right onto the B4518 signed Llan/Staylittle. Look out for a viewing point around 10 miles along on the right of the road. This is a good spot for a photo and there is a small picnic site if you want a break.
Continue on this road to Llanidloes a small market town with cafes if you want to take a break.
Follow the signs for Dolgellau (A470) passing the Texaco garage on the left. Continue to the junction of the A470 and turn right towards Llangurig.
Follow the A470 to Buith Wells for 28 miles. Then follow A470 towards Abergavenny at Llyswen the road becomes the A479. Continue on A479 to T-Junction turn left onto A40 towards Abergavenny.
Continue on A40 towards Raglan, join A449 towards Newport.
Exit A449 towards Usk A472 and almost as soon as you join the A472 take the right turn onto the B4235 signed Chepstow.
This is a lovely sweeping road that will take you into Chepstow to follow the signs to Bristol over the old Severn Bridge.