GPS Cycle and Walking Routes

Glyder Fawr and Glyder Fach Walk

5 miles (8 km)

Explore the Glyderau mountain range on this spectacular walk in Snowdonia. The challenging walk visits the peaks of Glyder Fawr and Glyder Fach with incredible views towards Tryfan and over Llyn Ogwen and Llyn Idwal. You will also pass incredible rock formations in the form of the Cantilever Stone and Castell y Gwynt.
The walk starts at Llyn Ogwen by Idwal Cottage where parking is available. You then climb towards the pretty Llyn Bochlywd and then on to Bwlch Tryfan. You continue to the peak of Glyder Fach, the second highest of theGlyderau rangeand the sixth highest in Wales. There is a challenging section over the spectacular Bristly Ridge where some scrambling is required. It's a stunning ridge with truly awe inspiring views over Nant Ffrancon and Cwm Idwal. At the summit of Glyder Fach you will find the precariously positioned Cantilever Stone.
The climb then continues to the high point of the Glyderau range at the 1000m high Glyder Fawr. You will pass the magnificent Castell y Gwynt with its series of tall spiky rocks and enjoy views towards Snowdon on this section.
The descent back to Llyn Ogwen passes the two pretty lakes of Llyn y Cwn and Llyn Idwal with wonderful views over the Ogwen Valley.
If you'd like to continue your walking in this area then the Cwm Idwal and Tryfan walks are both nearby.
The climb to Elidir Fawr can also be tackled from the nearby Nant Peris at the bottom of the Llanberis Pass.

Glyder Fawr and Glyder Fach OS Map - Mobile GPS OS Map with Location tracking

Glyder Fawr and Glyder Fach Open Street Map - Mobile GPS Map with Location tracking


The Ogwen Snack Bar is located at the western end of Llyn Ogwen and a good option for some post walk refreshments. It's open seven days per week for most of the year – opening only at weekends during the winter months. The popular snack bar can trace its history back to the early 1900’s when it was precariously perched on rocks at the head of the waterfall from which it takes its name. Known throughout the world it has its place in the mountaineering history in this part of Snowdonia and has been run by the same family since 1953. It moved to its current location over forty years ago to the newer premises incorporating Snowdonia National Park warden office and public toilets. It sells a range of drinks, snacks, pasties, paninis and locally baked cakes. There's an outdoor seating area where you can enjoy your food with fine views of the surrounding mountains. You can find the snack bar between Llyn Ogwen and Llyn Idwal at postcode of LL57 3LZ for your sat navs.

Further Information and Other Local Ideas

The Lon Las Ogwen cycle route starts/finishes at the western side of Llyn Ogwen. The off road trail will take you north to the coast at Bangor, passing the splendid Penrhyn Quarry at Bethesda and the stunning glacial valley of Nant Ffrancon on the way. It runs mostly along old railway paths and the River Ogwen before finishing on the coast. The route is also suitable for walkers.
For more walking ideas in the area see the Snowdonia Walks page.

Cycle Routes and Walking Routes Nearby


Glyder Fawr from Glyder Fach - - 122074

Glyder Fawr from Glyder Fach. It is thought the word "Glyder" derives from theWelshword "Gludair", meaning a heap of stones.

Y Glyder Fach 03

Y Glyder Fach. Bristly Ridge is a grade 1scrambleinSnowdonia. It is located on the north side of Glyder Fach.

Y Glyder Fach 11

On the way down from Y Glyder Fach to Tryfan: rocks like a duck's beak.

Glyder Fach - - 703254

Glyder Fach. Looking across from the north side of Bwlch y Ddwy Glyder, with Castell y Gwynt on the right.

Bwlch Tryfan - - 2876294

Bwlch Tryfan

The famous 'cantilever' stone on Glyder Fach - - 2442619

The famous 'cantilever' stone on Glyder Fach. This precariously positioned rock is much photographed.

Castell y Gwynt - - 892392

Castell y Gwynt. "Castell y Gwynt" and the "Cantilever Stone" featured inWalt Disney's 1981 movieDragonslayer; this was one entrance to the Dragon's lair.

Llyn Idwal - - 1411231

Llyn Idwal

Elevation Profile


GPS Files

GPX File

Glyder Fawr and Glyder Fach.gpx (On Desktop:Right Click>Save As. On Ipad/Iphone:Click and hold>Download Linked File)

Memory Map Route

Glyder Fawr and Glyder Fach.mmo (On Desktop:Right Click>Save As. On Ipad/Iphone:Click and hold >Download Linked File)