|Location Map ( geo)|
|Distance:||13.1 miles (21.1 km)|
|Meets:||A485, B4336, A475, B4338|
|Route outline (key)|
The B4459 is a winding road in southwest Wales. It was originally unclassified but gained its number in 1935.
The road starts in the middle of nowhere by turning off the A485 and heading roughly northwards, descending into the village of Pencader. It runs along the main street then climbs again back into open country. Presently we enter Llanfihangel-ar-arth where we give way to the B4336 at a crossroads.
After a steep descent into the bottom of the village, with a sharp right-hand bend by the church and pub, the road bears left to cross the River Teifi. The road narrows as it follows the valley to the left but after bearing right to climb out of the valley the central line returns - but only intermittently. We contour above the valley of a tributary and run through Capel Dewi before continuing on to Rhydowen, where we cross the A475.
The road now remains surprisingly built-up for longer than expected. In Pont Siân we reach a T-junction and TOTSO right, then climb into open country along yet another tributary. Presently, in Castell Howell, we reach a road junction. The original B4459 turned right along a narrow road to meet the B4338 at Rhos Ymryson. However, this has been unclassified since at least the 1970s and instead the B4459 continues ahead, keeping its central line. After a hairpin bend we run through Bwlch-y-fadfa then continue into Talgarreg, ending where the B4338 comes in from the right and TOTSOs to take on the road ahead.