Pen y Boncyn Trefeilw
646m (2120ft)
The Berwyns, Snowdonia, Gwynedd, Wales
You can find Pen y Boncyn Trefeilw & all the walks that climb it on these unique free-to-access Interactive Walk Planning Maps: (click/TAP to select)
1:25,000 scale OS Explorer Map (the ones with orange/yellow covers):
1:50,000 scale OS Landranger Map (the ones with pink/magenta covers):
See Pen y Boncyn Trefeilw and the surrounding tops on our free-to-access 'Google Style' Peak Bagging Maps:
See Pen y Boncyn Trefeilw and the surrounding tops on our downloadable PDF Peak Bagging Map:
   |
|---|
Vital Statistics:
| Length: | 10.5ml (17km) |
|---|---|
| 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
|
|---|
Vital Statistics:
| Length: | 12.75ml (20.5km) |
|---|---|
| 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
Fellow go4awalkers who have already walked, climbed, summited & bagged Pen y Boncyn Trefeilw
Christina Lander walked up Pen y Boncyn Trefeilw 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 climbed Pen y Boncyn Trefeilw on April 15th, 2023 [with] Friend [weather] Beautiful - Ok
Mark Davidson bagged Pen y Boncyn Trefeilw on July 3rd, 2006 [from/via/route] Walk gw120 The Western Berwyns from Hirnant Pass [with] Alone [weather] Nice & sunny
Donovan Suddell hiked Pen y Boncyn Trefeilw on April 1st, 2021 [from/via/route] GW120 [weather] Misty
Robert Taylor-Marriott summited Pen y Boncyn Trefeilw on October 22nd, 2012 [from/via/route] Route 42: Pen y Boncyn Trefeilw & Stac Rhos (PBTSR). [with] Vince Wetton and Robert Taylor-Marriott. [weather] Cloudy.
David Lane conquered Pen y Boncyn Trefeilw on December 2nd, 2006 [with] Kelly
Vince Wetton scaled Pen y Boncyn Trefeilw on October 22nd, 2012 [with] RTM [weather] Cloudy + Rain
Trevor Williams, Paul Booth and Richard Penney have all walked, climbed & bagged Pen y Boncyn Trefeilw.
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 Pen y Boncyn Trefeilw
If you would like to add your walk photographs and pictures featuring views from, on or of Pen y Boncyn Trefeilw 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.
