Leisurely 7 miles
Overcast, occasional drizzle
Leisurely 7 mile walk, along the Swiss Valley Trail, beginning from Llanelli Leisure Centre, following the Route 47 cycle path, towards the Upper and Cwm Lliedi Reservoirs. The Swiss Valley Trail is built on the site of the former Carmarthenshire Railway—the earliest operational public railway in Great Britain, authorised by an Act of Parliament in 1803.
On reaching the Cwm Lliedi Reservoir, the option exists to take a lower path, along the edge of the water. At the northernmost point of the route, it joins St Illtyd’s Walk, which is then followed, back to Furnace, via Cwm Tre-beddrod.
At Furnace Pond (shown as disused quarries) the path turns off and ascends to the left, in order to avoid a dangerous stretch of road-walking. The route then crosses the B4309, towards The Dell. It passes along the top of Furnace, until turning south, at Pen-y-fai. Shortly after crossing the B4308, it rejoins the cycle path and returns to the start.
Route map, elevation, GPX: Ordnance Survey, ViewRanger