This walk will require a bus or a train back from Talybont. It is lovely scenery all the way to the bus stop ending and there is also a well stocked shop right by the bus stop. Buses back are every two hours so make sure you know the times before heading off. The train station at Talybont isn’t much further if that suits better. If you are worried about timings you could take the bus out and do the walk in reverse.
Head to the Welsh flag at the top of the nearest hill that you can see from Penbryn Mynach and keep going as per Circular Walk 1. When you get to the split in the path near Bwlch y Llan do quickly take a 100 yard detour on the wrong path (right not left) and pop over the big stile to capture that magnificent surprise view of the estuary. Then pop back to keep on the right route.
You ascend quite quickly to 460m (potentially higher if you go off piste to your left) and then there is a small section of rough rock descent followed by a very gentle grassy descent to Pont Fadog.
This walk is essentially exactly the southern section of the fairly new Taith Ardudwy Way. It is very well signposted. Simply follow the Taith Ardudwy Way footpath signs. By following the route through the woods to the Welsh flag you join up with the Taith Ardudwy Way near the derelict buildings that are Gellfechan (or Cellfechan). The book “Gellfechan and Its Last Family” by Carol Ann Skelton about the last family to inhabit the buildings is a fascinating read. The book is usually available at the Lifeboat shop in Barmouth and the Tourist Information Centre at the railway station.