Y Groes Fagl
659m (2163ft)
The Berwyns, Snowdonia, Gwynedd, Wales
Not familiar with this top?
You can walk/hike to the top of Y Groes Fagl by using either of these 2 easy‑to‑follow 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
See Y Groes Fagl 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
See Y Groes Fagl 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.
You can find Y Groes Fagl & all the walks that climb it on these unique free-to-access Interactive Walk Planning Maps:
1:25,000 scale OS Explorer Map (orange/yellow covers):
1:50,000 scale OS Landranger Map (pink/magenta covers):
Fellow go4awalkers who have already walked, climbed, scaled, summited, hiked & bagged Y Groes Fagl
Stephanie Doyle walked up Y Groes Fagl on September 1st, 2023 [from/via/route] From campsite [weather] Beautiful - Great views
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
Mark Davidson bagged it on July 3rd, 2006 [from/via/route] Walk gw120 The Western Berwyns from Hirnant Pass [with] Alone [weather] Nice & sunny
Donovan Suddell hiked Y Groes Fagl on April 1st, 2021 [from/via/route] GW120 [weather] Misty
Andy Pearce summited on May 19th, 2012 [from/via/route] Tyn-y-cwn, Cwm Hirnant via Penllyn Forest [with] Jimmy & DJ McCullagh, Stu Keiller, Tyler & Ben Peacock [weather] Overcast but calm
Paul Booth and Richard Penney have both walked, climbed & bagged Y Groes Fagl.
To add (or remove) your name and experiences on this page - Log On and edit your Personal Mountain Bagging Record
Send us your photographs and pictures on, of, or from Y Groes Fagl
If you would like to add your walk photographs and pictures to this page, please send them as email attachments (configured for any computer) along with your name to:
and we shall do our best to publish them.
(Guide Resolution = 300dpi. At least = 660pixels (wide) x 440 pixels (high).)
You can also submit photos via our Facebook Page.
NB. Please indicate where each photo was taken and whether you wish us to credit your photos with a Username or your First Name/Last Name.
