Wales · Eryri National Park

Maesglase

HewittNuttallTrail 100MarilynHuMPSimm

4 classifications here — Trail 100, Marilyn, HuMP and Simm — belong to lists OpenFell holds only part of, so they have no list page. See how far the coverage goes.

Maesglase, 679 m, Gwynedd
Maesglase, 679 m, Gwynedd. Photo by Velela, CC BY-SA 2.5 · Wikimedia Commons
Height
678.5 m · 2,226 ft
Prominence
317.8 m
Grid reference
SH 81732 15037
Coordinates
52.72000, -3.75249
County / area
Gwynedd
OS Landranger
124 125
OS Explorer
OL23E
Summit feature
ground 2m E of cairn
Key col
SH 8020 1701 (360.7 m)

About Maesglase

Maesglase is the highest of the Dyfi Hills, standing about four miles south-west of Aran Fawddwy. It links by ridges and arêtes to several neighbours, among them Maen-Du, Craig Rhiw-erch, Waun-oer, Mynydd Dolgoed and Cribin Fawr, so it is often taken as part of a longer round. Approaches run through the forestry from Dinas Mawddwy or from the bwlch on the A470.

Which point is actually the summit has been disputed. Maen Du, at 674 m, was traditionally treated as the top, but later surveys found Craig Rhiw-erch, some 600 m to the west, to be higher at around 676 m; a more recent survey gives 678.5 m.

Background written from facts in the Wikipedia article on Maesglase (CC BY-SA 4.0). Heights, prominence and grid references come from the Database of British & Irish Hills, not from Wikipedia.

Access rights here

Conditional Right to roam: Right to roam only on mapped CRoW open access land.

Permission needed Wild camping: Permission needed everywhere.

General position for Wales — local byelaws, seasonal restrictions and closures can override it. Full details: access rights in Wales ·check another location.

Daylight at this summit today

Sunrise
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Sunset
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Daylight
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Civil twilight ends
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Computed astronomically for 52.720, -3.752. Plan your finish with the daylight safety planner.

Summit weather live

Loading forecast for the summit (679 m)…

Forecast adjusted to summit altitude. Weather data from MET Norway (CC BY 4.0).

Finding the summit

Surveyor's note

ground 45m SW at SH 81700 15007 and 60m SSW at SH 81712 14980 is about as high.

The recorded summit point is ground 2m E of cairn. That distinction matters on broad or flat tops, where the obvious cairn is not always the true high point.

Survey method
Leica NA730/Leica RX1250
Record revised
23-Feb-25
Drop measured from
SH 8020 1701 · 360.7 m

Classification history: Former Marilyn, Hewitt and Nuttall summit is hill 2146.

Survey notes are field observations recorded in the Database of British & Irish Hills (v18.3, CC BY 4.0) by the hill-surveying community.

Long-distance paths past this hill

One waymarked long-distance route runs within 2.5 km of the summit — useful if you are linking this hill into a longer walk, or want a made path for the approach.

RouteTotal lengthFrom summit
Cambrian Way483 kmover the top

Route lines © OpenStreetMap contributors (ODbL); distance from the summit computed by OpenFell.

Get food nearby

3 places to eat or drink within 10 km of the summit, rated under the Food Hygiene Rating Scheme (Scotland runs its own Food Hygiene Information Scheme, a pass/fail equivalent).

Rated places to eat within 10 km of Maesglase
PlaceTypeRatingDistance
The Buckley Arms HotelHotel/bed & breakfast/guest house5 out of 54.3 km · E
Caffi CarysRestaurant/Cafe/Canteen5 out of 55.2 km · SE
Cacennau Cil Y CoedRestaurant/Cafe/Canteen5 out of 56.5 km · NW

Classifications and ratings are the local authority's own and can be coarse — this is a lead, not a guarantee of opening hours or that food is served to non-residents. Follow a name through to the official rating page to check, and confirm before you rely on it.

Food hygiene data from the Food Standards Agency and Food Standards Scotland (Open Government Licence v3.0). Distances and directions computed by OpenFell from the summit.

The Maesglase group

8 other listed summits sit in the same prominence group, with Maesglase as the independent hill at its head.

Listed summits in the Maesglase prominence group
SummitHeightDrop
Waun-oer670 m120 m
Cribin Fawr659 m93 m
Craig Portas604 m54 m
Craig Portas East Top587 m34 m
Ceiswyn544 m145 m
Mynydd Fron-fraith514 m66 m
Godre Fynydd508 m85 m
Mynydd Cwmeiddew507 m34 m

Grouping is by prominence alone: a summit belongs to the nearest higher Marilyn it connects to without a deeper intervening col. Over a large massif that can gather hills no one would walk in a single day, and which few would describe as parts of the same mountain — it is a measure of independence, not a suggested route.

Nearest listed peaks

PeakHeightDistance
Craig Portas East Top587 m1.2 km
Craig Portas604.2 m1.8 km
Cribin Fawr658.8 m2.3 km
Pen Ochr y Bwlch564.3 m2.4 km
Pen y Brynfforchog684.9 m2.9 km
Waun-oer670 m3.2 km