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Mawddach Round


43 km / 27 miles
The round starts at Penmaenpool Bridge on the Mawddach Estuary and ascends the lower slopes of Cadair Idris via Gweman Lake before climbing the summit via the Foxes Path. It then transverses the Cadair ridge before descending to the iconic Barmouth Bridge. The route then follows the northern side of the estuary over the grassy slopes of Llanlech and onto the summit of Diffwys. The return to the start is via a steep descent into Cwn Mynach.

This is a very demanding route with over 7000ft of ascent. It should not be undertaken without good navigational skills. It should not be confused with other routes in the same area.

A limited downloadable route guide is available from the link below.

The route is based on that of David Pritchard, a keen fell-runner and long-time visitor to the estuary, celebrating his 50th ascent of each mountain ("Why not do the two together?") and very nearly served as a celebration of his own 50th year.

It is David's opinion that clockwise is the best way to tackle the route.


Path Type: Other Paths
Attributes: Other Paths
Very Challenging
Start and Finish: SH694184 - Penmaenpool, Gwynedd View on StreetMap
Web Sites: Mawddach Estuary walking - Mawddach Round

Publications, Badges and Certificates:

External download Mawddach Round  (Mawddach Estuary  - 2010 ) Download


You can use the interactive controls to zoom in and out and to move around the map, or click on a path or a marker for more info.(interactive map help)

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Paths Marked on OS mapping
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Anytime Challenges

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Hostel Accommodation
Bunk House

Contains Ordnance Survey data © Crown copyright and database right 2016.
© OpenStreetMap contributors under Open Database Licence.
Rights of way data from selected Local Authorities.
Large scale digital mapping is provided by John Thorn.
At high zoom levels the route is indicative only.
Purchase Ordnance Survey Maps:
OS Landranger 124
OS Landranger Active 124
OS Explorer 18, 23
OS Explorer Active 18, 23

Accommodation within 5 km of this Path:

Hostel Accommodation
2 km
3 km
Bunk House
< 1 km
25 km

Additional Images:

Connected Paths:


Reminder: Material downloaded from this website is for personal use only. Commercial use, reproduction, modification of all content is strictly prohibited without prior approval by the LDWA. Please Contact Us if you have any requests.

GPX Route File
MemoryMap Route File
Tracklogs Route File

Route Profile:

42.4 km (26.3 miles)
2,175 m (7,136 ft) ascent
868 m (2,848 ft)  maximum height

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