Routes

Planner

Features

Updates

App

Get the App

Routes

Hiking trails & Routes

Moelwyn Mawr summit – Cwmorthin Slate Mill loop from Blaenau Ffestiniog

Routes

Hiking trails & Routes

Moelwyn Mawr summit – Cwmorthin Slate Mill loop from Blaenau Ffestiniog

Moderate

4.8

(6)

hikers

Moelwyn Mawr summit – Cwmorthin Slate Mill loop from Blaenau Ffestiniog

02:54

7.88km

510m

Hiking

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: April 16, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Parc Cenedlaethol Eryri

Waypoints

Start point

Bus stop

Get Directions

240 m

Rhaeadr Ogwen (Ogwen Waterfall)

Highlight • Waterfall

You can drive almost directly to the waterfall by car. The car park is a popular starting point for hikes, even higher up.

Translated by Google •

Tip by

3.64 km

View of Llyn Stwlan Dam

Highlight • Viewpoint

In my opinion the best way to view the damn is be traversing the ridge of Craigysgafn from Moelwym Mawr to Moelwym Bach. Allowing you to take in the damn and surroundings area from many different vantage points

Tip by

3.72 km

Craigysgafn Summit

Highlight • Viewpoint

A small rocky summit on the ridge between Moelwyn Mawr, and Moelwyn Bach.

Translated by Google •

Tip by

4.26 km

Moelwyn Mawr summit

Highlight • Viewpoint

Moelwyn Mawr is a breathtaking peak that is surprisingly little-visited by most hikers. From the summit, you can see Cnicht’s ridge, Snowdon, Yr Aran, and Y Lliwedd. You can also observe 15 lakes nestled within the landscape.

Tip by

6.60 km

View of Llyn Stwlan and Moelwynion

Highlight • Lake

Take the Ffestiniog railway from Tan y Grisiau to Tan y Bwlch, then hike up the vale. Great views on the way.

Tip by

7.28 km

Cwmorthin Slate Mill

Highlight • Historical Site

Cwmorthin Slate Quarry is an impressive area, a magical hanging industrial valley above Tan y Grisiau that highlights Wales' industrial heritage with its massive works and ruins. It was in operation between 1810 and 1939 and has five different underground levels which were serviced with extensive trackways and machinery. Many of the surface buildings, such as the slate mills, can still be seen. If you are a photographer, this is the place to come in the early summer light or the cold winter mist.

Tip by

7.49 km

Cwmorthin Falls

Highlight • Viewpoint

Car park gets full up top so park sensibly park close to next car gives more space for others. Don’t park in front of gate as this is used by farmer Go Below and mountain/cave rescue. More parking available at bottom of hill.

Tip by

7.88 km

End point

Bus stop

Way Types & Surfaces

Way Types

5.01 km

1.91 km

373 m

371 m

225 m

Surfaces

2.55 km

2.46 km

2.28 km

317 m

272 m

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Weather

Friday 15 May

11°C

3°C

90 %

Additional weather tips

Max wind speed: 21.0 km/h

to get more detailed weather forecasts along your route

Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

Navigate

Send to Phone

Save

Edit route

Download GPX

Move start point

Embed on a website

Report an Issue

Nearby routes

Moderate

4.9

8,863

Snowdon via Pyg and Miners' Track Loop

04:56h

12.3km

680m

Hard

4.9

1,484

Snowdon loop on the Watkin Path from Nant Gwynant — Snowdonia National Park

05:22h

13.3km

980m

Hard

4.8

1,521

Snowdon via the Watkins path

05:17h

13.4km

980m

Easy

4.8

928

Llyn Idwal loop from Ogwen Cottage — Eryri / Snowdonia National Park

01:32h

4.77km

200m

Hard

4.8

936

Snowdon Horseshoe

05:51h

12.4km

870m

Moderate

4.8

959

Y Garn to Glyder Fach loop — Parc Cenedlaethol Eryri | Snowdonia National Park

04:21h

9.04km

850m

Easy

4.8

1,408

Llyn Idwal loop from Ogwen Cottage — Eryri (Snowdonia) National Park

01:11h

4.18km

100m

Moderate

4.8

585

Cwm Idwal & Y Garn loop from Ogwen Cottage — Eryri / Snowdonia National Park

03:07h

7.35km

610m

Hard

4.9

1,066

Moel Siabod and Daear Ddu Ridge Loop

04:59h

13.4km

770m

Hard

4.7

1,049

Rhyd Ddu and Snowdon Ranger Paths Loop

06:27h

17.8km

1,060m

Easy

4.9

1,069

The Precipice Walk & Llyn Cynwch loop — Snowdonia National Park

01:31h

5.66km

70m

Moderate

4.4

938

Around Llyn Padarn from Llanberis

02:23h

8.57km

150m

Moelwyn Mawr summit – Cwmorthin Slate Mill loop from Blaenau Ffestiniog

Rhaeadr Ogwen (Ogwen Waterfall)

View of Llyn Stwlan Dam

Craigysgafn Summit

Moelwyn Mawr summit

View of Llyn Stwlan and Moelwynion

Cwmorthin Slate Mill

Cwmorthin Falls

Nearby routes

Sign up or log in to keep exploring this route

We value your privacy ⛰️

We value your privacy ⛰️