Stac Rhos
630m (2067ft)
Stac Rhos is in The Berwyns, Snowdonia, Powys, Wales
You can walk to the top of Stac Rhos by using either of these 2 route maps:
Walk gw145 Pen y Boncyn Trefeilw and Foel Cedig from Hirnant Pass
The fabulous Berwyns
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Vital Statistics:
| Length: | 10.5ml (17km) |
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| Ascent: | 2,081ft (634m) |
| Time: | 6 hrs |
| Grade: |  (Moderate) |
Route Summary:
Hirnant Pass - Pen y Cerrig - Pen y Boncyn Trefeilw - Stac Rhos - Cefn Gwyntog - Foel Cedig - Cyrniau Nod - Y Groes Fagl - Pennllyn Forest - Ystrad-y-groes - Hirnant Pass
Walk gw120 The Western Berwyns from Hirnant Pass
The fabulous Berwyns
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Vital Statistics:
| Length: | 12.75ml (20.5km) |
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| Ascent: | 2,763ft (842m) |
| Time: | 7½ hrs |
| Grade: |  (Hard) |
Route Summary:
Hirnant Pass - Foel Goch (Berwyns) - Trum y Gwrgedd - Trum y Gwragedd - Foel y Geifr (Berwyns) - Pen y Cerrig Duon - Pen y Boncyn Trefeilw - Stac Rhos - Cefn Gwyntog - Foel Cedig - Cyrniau Nod - Y Groes Fagl - Pennllyn Forest - Ystrad-y-groes - Hirnant Pass
Interactive Walking Maps
See Stac Rhos and the surrounding tops on our unique, downloadable, PDF Peak Bagging Map:
NB: Whether you print off a copy or download it to your phone, this PDF Peak Baggers' Map might prove incredibly useful when your are up there on the tops and you cannot get a phone signal.
See Stac Rhos and the surrounding tops on our free-to-access 'Google Style' Peak Bagging Maps:
The Berwyns of Snowdonia National Park
Less data - quicker to download
The Whole of Snowdonia National Park
More data - might take a little longer to download
You can find Stac Rhos & all the walks that climb it on these unique free-to-access Interactive Walk Planning Maps:
1:25,000 scale OS Explorer Maps (orange/yellow covers):
An Interactive Walk Planning Map for OS Explorer 239 Lake Vyrnwy & Llanfyllin is not currently available
1:50,000 scale OS Landranger Map (pink/magenta covers):
Fellow go4awalkers who have already walked, climbed, scaled, summited, hiked & bagged Stac Rhos
Melfyn Parry walked up Stac Rhos on July 8th, 2026 [from/via/route] Followed the directions on walk GW120. The route up to Foel Goch was the hardest section, the first section is very steep involving some bracken areas, heather & bilberry bushes. Once on the faint path near the summit the going gets a lot easier. The path to the next summit of Trum y Gwragedd could easily be seen & progress was good, similarly the path to Foel y Geifr was straightforward. From here you descend to the Hirnant Pass which can be easily seen below, if you turn back along the route before dropping down you can avoid the heather & keep to grassy slopes. The second part of the walk is mainly on a forest track with forays off it to get to each summit, the first being Pen y Boncyn Trefeilw. The next peak Stac Rhos was not the easiest to find due to there being several little mounds of similar height, but it is in fact the first one on the right as you approach. From here go diagonally across to the mound on the left & cross over the fence at a boundary stone & follow the fence (left) down through a slightly boggy area. You will see another boundary stone tucked by the fence higher up but don't turn right here, go on a little further until you see a gate on your left & here turn to follow a faint path towards Cefn Gwyntog. There is an area about half way which is full of deep bog pools, no path, this is trial & error but does meet the faint path on the other side to take you to the summit. From the summit you have to retrace your steps back to the gate (mentioned earlier), go over the gate & continue back to the forest track. From here it is straightforward to Foel Cedig & finally Y Groes Fagl. From here you descend to the same track that enters the forest & continues back down to the car park. [with] Solo walk [weather] Dry & very warm day with some welcome breezes. - A quiet day in the hills, only saw 1 walker all day.
Christina Lander climbed it on July 30th, 2024 [from/via/route] Parking area next to the bridge by Foel y Ddinas on the Hirnant Pass - up the grassy ridge to Pen Cerrig Duon - Pen y Boncyn Trefeilw - Stac Rhos - Cefn Gwntog - Foel Cedig - Cyrniau Nod - Y Groes Fagl - through Penllyn Forest back to start [with] Dick [weather] A beautiful, hot sunny day - During our holiday staying at Y Gilfach, Bryn Melyn, Llandderfel
Stephanie Doyle bagged it on April 15th, 2023 [with] Friend [weather] Beautiful - No cairn
Mark Davidson hiked Stac Rhos on July 3rd, 2006 [from/via/route] Walk gw120 The Western Berwyns from Hirnant Pass [with] Alone [weather] Nice & sunny
Robert Taylor-Marriott summited on October 22nd, 2012 [from/via/route] Route 42: Pen y Boncyn Trefeilw & Stac Rhos (PBTSR). [with] Vence Wetton and Robert Taylor-Marriott. [weather] Cloudy.
Vince Wetton conquered it on October 22nd, 2012 [with] RTM [weather] Cloud + Rain
Paul Booth and Richard Penney have both walked, climbed & bagged Stac Rhos.
To add (or remove) your name and experiences on this page - Log On and edit your Personal Mountain Bagging Record
Photographs & Pictures of views from, on, or of, Stac Rhos
Send us your photographs and pictures on, of, or from Stac Rhos
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