The route in fact starts at Pantyffynnon just up the road from the train station. We however, joined it just outside Ammanford. There is no route description in this blog as it is not fully shown on maps as yet. However it is well sign posted and totally traffic free on a good tarmac trail, with frequent views of the Afon Amman.
If there was one grumble it is the way the council have installed gates which are either not convenient or just impossible to squeeze a bike through - the one at the back of Tescos is an example in point. I understand from Sustrans numerous complaints have been made.
However this did not spoil our enjoyment of the ride. There are quite a few interpretation panels along the route explaining the history as well as the Mabinogion stories connected with the area.
At the Brynamman end we left the trail and joined the road and peddled up the hill to the Black Mountain Centre where a welcome coffee and toasted teacake were had.
We cycled back and continued on to Pantyffynnon and in fact a bit further along a minor road which led to a wobbly bridge, a ford.and to a railway line crossing where we stopped for lunch and then back to the car.
Overall about 18 miles of traffic free cycling.