Cwm Lloer

After just over a mile of comfortable ascent from the main A5 road through the Ogwen Valley it’s possible to reach Cwm Lloer which consists of a small lake (Ffynnon Lloer) in a glacial bowl nestled at 2,100ft between the summits of Pen Yr Ole Wen and Carnedd Dafydd.

The simple trail route below to this beautiful location includes some of the most popular spots for photographers to take the same photographs as each other of Tryfan mountain. This generally consists a bit of long exposure water in the foreground, approximately ⅔ the way up the Afon Lloer stream, with Tryfan poking it’s triangular silhouette in the distance. It’s certainly a lovely spot but there are far better angles of Tryfan to be had from higher up on this side.

Cwm Lloer is a jaw dropping valley, and the light is more often than not best early on in the day, before Pen Yr Ole Wen’s significant shadow grows across the valley floor from mid to late afternoon. We feel we only truly appreciate Cwm Lloer when we circle the whole thing, see our longer trail route info below which includes the neighbouring mountain summits.

Cwm Lloer Photo Gallery

A selection of unique photos from across hundreds of our own visits to Cwm Lloer and the surrounding mountains.

Easy Cwm Lloer Trail Route

The quickest way to reach Cwm Lloer from the main A5 road. Just over a mile of straightforward ascent with easy navigation. Includes the most seen spots to take photos of Tryfan mountain.

Distance 1.1 miles (each way)

Time 15 mins (running) 30 mins (walking)

Total Ascent 1,163ft

OS Maps click to open this route on the OS Maps website

Summits none

Views Ogwen Valley, Tryfan, the Glyderau, the Carneddau, Llyn Boclwyd, Llyn Idwal, Llyn Ogwen, Cwm Lloer

Cwm Lloer Easy Trail Route 3D Map

1. Park on the main A5 road at the base of Tryfan (the east end of Llyn Ogwen). Directly opposite Tryfan cross the small bridge past a house in the trees.

2. The track winds around for a couple of hundred yards before crossing a big stile on a traditional stone wall (farm on left at this point).

3. From here it’s a straight forward trail up, headed north, picking up the paths alongside the Afon Lloer stream until reaching Ffynnon Lloer lake.

Cwm Lloer Summit Trail Route

With the same starting point on the main A5 road, this route adds in the summits of Pen Yr Ole Wen and Carnedd Dafydd in a breathtaking short tour of the most southern Carneddau mountains (look out for the wild ponies!).

Distance 4.7 miles

Time 1 hour 10 mins (running) 3 hours (walking)

Total Ascent 2,582ft

OS Maps click to open this route on the OS Maps website

Summits Pen Yr Ole Wen, Carnedd Dafydd

Views Ogwen Valley, Tryfan, the Glyderau, the Carneddau, Llyn Boclwyd, Llyn Idwal, Llyn Ogwen, Cwm Lloer

1. Park on the main A5 road at the base of Tryfan and follow the Easy route above up to Cwm Lloer.

2. On reaching Cwm Lloer this route heads up to the left towards Pen Yr Ole Wen summit (west). navigation is easy as we simply make sure we can see the drops on our right hand side all the way to the top. There’s some incredibly fun short scrambling sections and our friends and family love this part of the trail.

3. From Pen Yr Ole Wen summit the trail continues west, arcing around to the north and finally due east to Carnedd Dafydd summit. We find navigation a breeze here in any weather as we continue to keep the drops on our right hand side the whole way.

4. The path continues east from Dafydd summit, with big drops appearing on the left hand side. On this route we walk a short distance before heading off trail across the heather, back down towards Ffynnon Lloer lake. This is the hardest part of the route to navigate in bad weather as there is no path, best enjoyed the first few times in full sunshine. We love this route in poor conditions now we know it well.

5. After reaching the “safety” of Cwm Lloer this Snowdonia trail route gets back on the marked paths and descends via the same mile of trail along Afon Lloer stream as it started on.

Parking for Cwm Lloer

Free roadside parking at the north end of Tryfan / east side of Llyn Ogwen lake.

Postcode LL24 0EU gets one to the A5 road near Ogwen Valley.