GPS Cycle and Walking Routes

Llyn Geirionydd

2 miles (3 km)

An easy circular walk around the delightful Llyn Geirionydd in the Gwydyr Forest area of the Snowdonia National Park. It's a very peaceful area with great views of the Carneddau mountains and the woodland surrounding the lake.
You can start the walk from the car park at the south eastern end of the lake. There's a picnic area and toilets here too. Follow the little country lane along the eastern side of the water before crossing the River Geirionydd at the northern end. A public footpath then runs along the western side of the lake, just below Mynydd Deulyn.
If you head west you can enjoy two more lovely reservoir walks at Llyn Cowlyd and Llyn Crafnant. Llyn Cowlyd is the deepest lake in North Wales and has more nice waterside trails. Llyn Crafnant has a fine circular trail with a lakeside cafe which also hires rowing boats.
You could also follow the trails along the River Geirionydd at the northern end of the water or pick up the woodland trails in the surrounding forests.
The lake is located near to the village of Trefriw where you can enjoy a little walk along the delightful Fairy Falls.


LL27 0YX - Please note: Postcode may be approximate for some rural locations

Llyn Geirionydd OS Map - Mobile GPS OS Map with Location tracking

Llyn Geirionydd Open Street Map - Mobile GPS Map with Location tracking


About half a mile to the west of the lake you'll find Llyn Crafnant which has a decent Lakeside Cafe. You can reach it by following a public footpath at the southern end of the lake. The cafe does a good range of meals and is in a lovely spot with views across the lake.

Further Information and Other Local Ideas

A few miles to the east you will find the noteworthy market town of Llanrwst. Here you can try the circular Llanrwst Walk which visits some of the towns highlights. These include the splendid Gwydir Estate which contains a historic castle, an ancient chapel, the Grey Mare's Tail Waterfall and an expansive forest.
For some interesting local history try the Dolgarrog Pipeline Walk. This explores the area around the little village, visiting the impressive pipeline structure and the Coedty reservoir. Near here there's also the beautiful Llyn Eigiau where the reservoir dam was breached leading to the Dolgarrog Dam disaster of 1925.
Just east of Dolgarrog there's the climb to Cadair Ifan Goch, a National Trust owned area. From the summit of the hills there are excellent views over the River Conwy Valley to theCarneddaumountains.
For more walking ideas in the area see the Snowdonia Walks page.


Llyn Geirionydd - - 776304

Llyn Geirionydd

Roadbridge near Llyn Geirionydd - - 221628

Roadbridge near Llyn Geirionydd. This little roadbridge spans a tributary near the inflow to the lake at grid reference SH 76112 60310. Ty Newydd can be seen at the end of the lane in the distance.

Northern tip of Llyn Geirionydd - - 181437

Northern tip of Llyn Geirionydd

Taliesin Monument - - 165723

Taliesin Monument. This monument commemorates the supposed birthplace of the ancient bard Taliesin on the shores of Llyn Geirionydd.

The eastern slopes of Mynydd Deulyn viewed across Llyn Geirionydd - - 4885722

The eastern slopes of Mynydd Deulyn viewed across the lake.

Mynydd Deulyn Summit Cairn - - 822762

The summit cairn of Mynydd Deulyn looking Southwestwards towards Moel Siabod in the distance taken at grid reference SH 75941 61269. The cairn lies between the two lakes of Llyn Crafnant and Geirionydd. You can climb the hill for some fine views back down to the lake.

The Upper Geirionydd Gorge - - 937163

Walkers in the Upper Geirionydd Gorge just north of the lake. Compared with the optional hard start (937158) the upper gorge is a much easier proposition. The flanks of the gorge are covered with old mine shafts.

Outlet from Llyn Geirionydd - - 3371254

Outlet from the northern end of the lake.


GPS Files

GPX File

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

Memory Map Route

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