Horseshoe from Blaen y Glyn
1 SO056175 Start at the upper Blaen y Glyn car park. Leave the car park and walk south-west along the road for around 1km before turning right into a wooded area on the waymarked Taff Trail. The trail bends around to the north, meeting a minor road on the edge of the forest. Continue northwards here on the edge of the wood, reaching a deeply cut gorge on the northern edge of the forest.
2 SO034182 Cross the stream and then take the track heading to the west, reaching and crossing the earthen dam at the southern end of the Neuadd Reservoir. An obvious stone-laid track leads steeply uphill from here, still heading west to a cairn on the Craig Fan Ddu ridge.
3 SO019183 Follow the track to the north, staying close to the steep drop on your right-hand side and passing through a short but narrow ridge section after around 2km. The ground rises again from here before dropping into the saddle at Bwlch Duwynt, where several paths meet. Continue on the steep uphill section to the top of Corn Du.
4 SO007213 Take the easternmost track, close to the steep cliffs on the edge of Corn Du. A bearing will be useful in poor visibility, and care will be needed in high winds. The path drops steeply to another small saddle before rising again to reach the top of Pen y Fan with its obvious marker cairn. Continue to follow the line of the cliffs, descending the precarious, stepped track on the southeastern side of the summit plateau to another saddle before the steep climb to the prominent peak of Cribyn.
5 SO024213 Descend Cribyn, staying on the track close to the cliff edge. The track gradually eases and terminates at the distinct saddle, crossed by a stony track known as the Gap Road. There are several tracks leading up the opposite slope to Fan y Big. Take any of these to the top, another prominent arrowhead of a peak.
6 SO037206 Follow the gently downhill track to the south before rising gradually again to a small knoll around 2km from the summit. Take a bearing from here to cross the undulating moor to the south and reach the steep cliff Graig Fan Las. Staying close to the cliff edge, continue to the south, picking up an improving track leading downhill. The trail descends steeply towards the end with rocky steps to be taken cautiously before passing between a wood and stream with small waterfalls to your right. The track ends in the bottom corner of Blaen y Glyn car park, the starting point of the walk.
Corn Du and Pen y Fan.