Conwy Castle and Town Walls and Bryneglwys Slate Quarry
Plan this ride
Recorded distance
296 km
Riding-time estimate
4 h 56
Journey
Recorded itinerary
Distance and timing basis
Ordered leg totals agree within rounding. Stop distances are approximate sums of rounded legs. Stops, delays, approach and any separate return travel add time. Basis: producer-declared routed record.
Reading history stays on this device. My road watch requires a separate selection; opening it does not subscribe this ride.
Distance and riding time are measured on the routed road. Check local closures and conditions before you ride.
296 km from Deganwy to Deganwy, about 4 h 56 of riding. On the way it passes Penrhyn Slate Quarry and Bethesda, Gorseddau and Prince of Wales Slate Quarri, Bryneglwys Slate Quarry and back through Gorseddau and Prince of Wales Slate Quarri. It was put together for the scenery rather than the shortest line.
Scenic road chapters
Conwy Castle and Town Walls → Penrhyn Slate Quarry and Bethesda
27 km through ground somebody thought worth listing. The road passes it rather than bypassing it — speed drops and stays down. Park rather than crawl through.
Chapter facts
Length
27 km
Snowdonia Llanberis Pass
For about 49 km this is Snowdonia Llanberis Pass, a road with a name of its own and a reason for it. Expect company on a summer weekend. Early is better than fast.
Rider note
Check the pass is open before you commit to it.
Chapter facts
Length
49 km
Named road
Snowdonia Llanberis Pass
Pass
Pen y Pass
Waypoint introductions and full write-ups
1. Conwy Castle and Town Walls
Edward I built Conwy Castle in just four years, from 1283 to 1287, as part of his campaign to subdue the Welsh, and the result is one of the most impressive medieval fortresses in Europe. Designed by the master mason James of St George, it stands on a rock above the estuary of the Conwy river, with eight massive towers and high curtain walls, and the town below is still enclosed by its original walls, with twenty-one towers and three gateways. Walking along the walls gives superb views of the town, the castle, the estuary and the mountains of Snowdonia. The castles and town walls of King Edward in Gwynedd were inscribed on the UNESCO list in 1986.
May refer to an earlier itinerary; verify against your selected route before riding.
Planning note
Conwy Castle and Town Walls is where the day begins. Next is Penrhyn Slate Quarry and Bethesda.
2. Penrhyn Slate Quarry and Bethesda
The Penrhyn Quarry is a hole you can see from a long way off. For much of the nineteenth century it was the biggest slate quarry in the world, a huge series of grey terraces cut into the mountain above Bethesda, and the roofs of half of Britain and of cities as far away as Hamburg after its great fire came from here. Its owner, Lord Penrhyn, was a rich and stubborn man, and in 1900 his quarrymen began a strike that lasted three years, one of the longest and bitterest labour disputes in British history. The community of Bethesda, named after a chapel, was split by it, and the memories are still sensitive. The whole slate landscape of north-west Wales was listed by UNESCO in 2021.
May refer to an earlier itinerary; verify against your selected route before riding.
Planning note
Penrhyn Slate Quarry and Bethesda comes up about 27 km into the recorded legs. Next is Gorseddau and Prince of Wales Slate Quarri.
3. Gorseddau and Prince of Wales Slate Quarri
High above Porthmadog, in the empty upland between Cwm Pennant and Cwmystradllyn, two abandoned slate quarries sit like ruined castles on the hillside. Gorseddau and the Prince of Wales quarry are part of the Slate Landscape of Northwest Wales, which UNESCO listed in 2021, and they tell a story of big hopes and quick failure. Gorseddau in particular was developed in the 1850s with money and ambition, a tramway and a grand multi-storey mill at Ynys-y-Pandy whose roofless stone shell still looks like an abbey. The slate turned out to be poor, and within a couple of decades the whole enterprise had wound down.
May refer to an earlier itinerary; verify against your selected route before riding.
Planning note
about 76 km into the recorded legs you reach Gorseddau and Prince of Wales Slate Quarri. Next is Bryneglwys Slate Quarry.
4. Bryneglwys Slate Quarry
High above the village of Abergynolwyn, in a side valley where the sheep outnumber everyone, the spoil heaps of Bryneglwys tell you that this quiet corner of southern Snowdonia was once an industrial place. Slate was cut here through the second half of the nineteenth century and into the twentieth, and the whole reason the little Talyllyn Railway exists is to carry it down the valley to the coast at Tywyn. The quarry finally closed just after the Second World War, and the railway, which should have died with it, was taken over by volunteers in 1951 and became the first preserved railway in the world. You can still walk up from the old incline at Nant Gwernol into the quarry workings, past roofless barracks and wheel pits, with streams running through all of it.
May refer to an earlier itinerary; verify against your selected route before riding.
Planning note
Conwy Castle and Town Walls closes the day.
Leg by leg
Conwy Castle and Town Walls to Penrhyn Slate Quarry and Bethesda
Conwy Castle and Town Walls → Penrhyn Slate Quarry and Bethesda is 27 km of rhythm rather than effort. Let it flow and let the view breathe.
Penrhyn Slate Quarry and Bethesda to Gorseddau and Prince of Wales Slate Quarri
Penrhyn Slate Quarry and Bethesda → Gorseddau and Prince of Wales Slate Quarri is 49 km of rhythm rather than effort. Let it flow and let the view breathe.
Gorseddau and Prince of Wales Slate Quarri to Bryneglwys Slate Quarry
Gorseddau and Prince of Wales Slate Quarri → Bryneglwys Slate Quarry is 69 km of rhythm rather than effort. Let it flow and let the view breathe.
Bryneglwys Slate Quarry to back through Gorseddau and Prince of Wales Slate Quarri
Bryneglwys Slate Quarry → back through Gorseddau and Prince of Wales Slate Quarri is 68 km of rhythm rather than effort. Let it flow and let the view breathe.
back through Gorseddau and Prince of Wales Slate Quarri to back through Penrhyn Slate Quarry and Bethesda
back through Gorseddau and Prince of Wales Slate Quarri → back through Penrhyn Slate Quarry and Bethesda is 52 km of rhythm rather than effort. Let it flow and let the view breathe.
back through Penrhyn Slate Quarry and Bethesda to Conwy Castle and Town Walls
back through Penrhyn Slate Quarry and Bethesda → Conwy Castle and Town Walls is 30 km of rhythm rather than effort. Let it flow and let the view breathe.