Map & Elevation
About this Route
This GPX climbs Aran Fawddwy from the head of Cwm Cywarch and returns the same way. It covers 11.8 km with about 807 m of ascent, taking around 5 to 7 hours. The route is quieter than the northern Aran ridge and crosses rough, wet country where the path is not fully waymarked.
From the small parking area, follow the track north from the end of the road and take the left branch beside the stream below Glasgwm. The path climbs steeply out of the cwm, passing waterfalls and rough crags before reaching broader moorland. Continue on the path chain beneath or around Glasgwm and towards the Aran ridge. The final ascent reaches Aran Fawddwy's summit at 905 m. Steep ground drops towards Creiglyn Dyfi nearby, and the plateau can be confusing in cloud.
Return to Cwm Cywarch by the same southern approach. This GPX does not continue north to Aran Benllyn or complete the Glasgwm circular. Paths and fences are intermittent, peat can be deep and stream crossings become difficult after heavy rain. Carry a map and compass, leave enough daylight for the steep descent into the cwm and keep well back from corrie edges.
The Aran Fawddwy path starts at the head of Cwm Cywarch and is not fully waymarked.
Dinas Mawddwy community guide
Route Waypoints
Start at the small parking area near the head of the valley. Keep farm access, gates and turning space clear.
Follow the track north from the end of the road, passing beneath the steep crags of Glasgwm.
Take the left-hand footpath following the stream uphill. The route is not fully waymarked, so confirm the junction.
Climb steep, rough ground beside the water. Slabs and grass are slippery after rain.
Reach broader peat and grass above Cwm Cywarch. Use a bearing when the path fades.
Continue towards Aran Fawddwy, keeping away from steep corrie ground and ignoring lines towards Glasgwm.
Reach the 905 m summit. Stop here; Aran Benllyn lies beyond the scope of this GPX.
Retrace the upper moor and waterfall path to the valley-head parking area.
Essential Tips
The local route is not fully waymarked. Carry a map and compass and use them before cloud closes in.
Waterfalls and side burns rise quickly. Turn back if a crossing or wet slab looks unsafe.
Steep ground lies near Creiglyn Dyfi. Give it plenty of room in mist, wind or snow.
The path into Cwm Cywarch is steep, wet and rough. Do not leave the summit too late.
Frequently Asked Questions
How long does it take to climb Aran Fawddwy from Cwm Cywarch?
It takes around 5 to 7 hours for the full out-and-back route, covering 12 km with 741 m of ascent. The estimated time using Naismith's Rule is 3 hours 38 minutes, but allow extra time for rough terrain and navigation.
Is the path to Aran Fawddwy well marked?
No, the route is not fully waymarked. You'll need to carry a map and compass and know how to use them, especially when the path fades on the upper moor or if cloud comes in.
Where do I park for the Aran Fawddwy walk from Cwm Cywarch?
There's a small parking area near the head of Cwm Cywarch valley at grid reference SH 852 188. Keep farm access, gates and turning space clear when you park.