This is an interesting and varied route of 9 or 10 miles. It is of moderate difficulty with two quite steep ascents, one fairly short, the other a little longer.
Walkers should be properly equipped with stout walking boots and appropriate warm clothing, food and water. Walkers should carry a map and compass and have the ability to use them. Navigation can be tricky on the open hills especially in poor weather.
All walkers are responsible for ensuring that they are properly equipped and have the required level of fitness to complete the walk. 

From the Mid Wales Bunkhouse, Tipi and Camping it passes through the Gilfach Nature Reserve with a brief visit to the nature discovery centre, if open, before crossing the River Wye and main A470 trunk road at Marteg Bridge.
Then there is a steep climb onto high ground above Nannerth. Once on the high ground care is required to avoid following the sheep path which turns to the north and eventually disappears. Keeping the stream on the left the route follows an ancient and little used bridleway across high pasture, passing a derelict settlement.
In very wet weather and especially with poor visibility this section can be quite boggy and difficult. Therefore an alternative is suggested, and shown in red on the map.
Eventually the stream is crossed and there is a final climb to the Rhayader to Cymystwyth mountain road.
Turning left, the road is followed for a couple of miles before our itinery heads off on the right, dropping to cross the river and then climbing to skirt Esgair Penygarreg. From here, on a good day, there are outstanding views of Rhayader and the hills stretching many miles into the distance, and is the perfect place for a picnic stop.
Slightly further on, and in the opposite direction, there is a spectacular view of Penygarreg reservoir and the Elanith. Our path tracks to the left and eventually starts to drop towards the Elan Valley closer to Rhayader.
Finally the B4518 Elan Valley road is reached. This is crossed to join the Elan Valley Trail, which follows the old railway line, and from here it is an easy walk to Cwmdauddwr and eventually Rhayader itself.

Please bear in mind that any individual who is not properly prepared can affect the enjoyment and safety of the entire group.