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Name:Y Llethr
Hill number:2056
Height:756m / 2480ft
RHB Section:30D: Barmouth to Betws-y-Coed and Bala
Nuttall/Wainwright area:The Rhinogs
County/UA:Gwynedd (CoU)
Catchment:Artro, Mawddach, Catchment Boundaries
Class:Marilyn, Hump, Simm, Hewitt, Nuttall,
Buxton & Lewis, Bridge
(Ma,Hu,Tu,Sim,Hew,N,BL,Bg,P500)
Grid ref:SH 66137 25777
Summit feature:ground near slight bend in wall
Drop:561m
Col:195m  SH699346  
OS map sheet(s):(1:50k) 124
(1:25k) OL18W
Observations:summit is 25m S of cairn
Survey:Abney level
GPS data:show GPS entries for this hill

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N.B. Some hill summits are on private property or on land where there is no public right of way.  Permission should be sought from the landowner where access to a hill summit is through private land.
Please report via the contact page any logs you see below which describe or encourage acts of trespass, and mention the hill number and hill name.

Logged Descriptions  (logged by 400 users, only the latest 50 shown - Show all)ByDate of Ascent
Talybont station - Moelfre - Y Llethr - Rhinog Fach - Y Llethr - Crib-y-rhiw - Diffwys - Diffwys W Top - Craig y Grut - Mynydd Egryn - Mynydd Egryn S Top - Garn - bunkhouse between Garn & Ffridd GorllwynMark Jackson17/04/2019
Dragon's Back Reccedc9621/03/2019
South Rhinogs from Cil-cychwyn farm (Cwm Nantcol). Walk to Lyn Hywel then climbed Y Leithr, Crib-y-rhiw, Diffwys West Top and Diffwys. On return included Moelfre (Marylin & Dewey).knarf25/09/2018
Ian and gangkenthompson12/05/2018
With LynfaRob Pen y Garn29/04/2018
With Rob.Lynfa Penygarn29/04/2018
Combined with a repeat of Rhinog Fach for a S06 completion. Most snow thawed out, but ground was still well frozen at the summit and deep drifts by the wall made it super easy to climb over.Alex C16/12/2017
3/7 (Craig y Lyn Hywel/Rhinog Fach/Y Leither/Crib-y-Rhiw/Diffyws/Diffwys West Top/Craig y Grut (Lawlech)Fergalh16/09/2017
From Tal-y-Bont anticlockwise to Diffwys then Y Llethr. A rather boring mound but great views of the coast. With Mark, Hamish and Huey.Saggers09/07/2017
Rhinog Fawr, Rhinog Fach, Y Llethr, Crib-y-rhiw, Diffws, Diffws West Top. Followed route in Nuttall's book. Couldn't find anyone at the farm so I left £2 parking fee in the porch. Weather had closed in by the end and it was a long day, made the mistake of following the bridleway at GR634240 on the map instead of getting The Nuttalls book out of my rucksack! Should have turned off at GR 640242 and headed for the gate at GR637246.tsharp07/06/2017
Dragon's Backhaydnw23/05/2017
Start at end of minor road off A496 in Cwm Mynach SH 683 219 via Crib-y-rhiw & double back to Diffwys & Diffwys West top.Westdenewalker14/10/2016
With Tim747 and Parlick- A fine Tuesday outingShutterlag11/10/2016
#614 Parking for a couple of cars at 62893 25782. ROW to coll, Molefre, Y Llethr, descent via disused quarry to NW. Fine day out with Parlick & Shutterlagtim74711/10/2016
Parked on grass verge by minor road in Cwm Nantcol at SH 62904 25783. Followed path over col then track down to footbridge over outflow of Llyn Bodlyn reservoir at SH 64617 23816. Then Diffwys West Top > Diffwys > Diffwys NE Top > Crib-y-rhiw > Y LLethr. From summit of Y Llethr returned to stile at SH 66047 25556 then followed path mostly beside wall back to col.David Gradwell21/08/2016
From Diffwys towards Rhinog Fach - top in cloud. Steep descent to Llyn Hywel!twg2710/08/2016
Hit as part of a route from Trawsfynydd to Llanelltyd over Moel Ysgyfarnogo, Rhing Fawr, Rhing Fach, Y Llethyr, Diffwys and Y Garn. Two days, wild camped on east shore of Llyn Hywelandrew.morel28/07/2016
Nuttall walk on a sunny dayRuth14/05/2016
Climbed after a wildcamp with Smivvy and Tom.zaul_uk30/04/2016
13.5 mile circular ridge walk from the car park east of Cors y Gedol Hall, walked up to the grassy dome of Moelfre then along the low ridge to Y Llethr, bagged Crib-y-Rhiw and onto Diffwys, then carried on along to Diffwys West Top, Craig y Grut and out and back to Mynydd Egyrn, followed bridleway back to the car park, a very pleasant walk with great views, good paths and not too much rough terrain.DanTrig26/09/2015
After Rhinog Fawr, back to bealach, round the side of Fach, up the side of the 2 lochans and on to summit. Pleasant. the back to CP to EThearlaichdubh17/09/2015
Nuttall walk 9.1 part: Rhinog Fach - Y Llethr - Crib-y-rhiw - Diffwys NE top - Diffwys - Diffwys W topronaldo33308/08/2015
After Rhinog Fawr and Fach continued to Y Llethr. Onwards to Diffys.nordicstar27/06/2015
A grey day - start from Cwm Nant Col - a slow long grassy climb along an old track to the col between two marilyns Y Llethr and Moelfre - first we follow a dry stone wall - the clouds envelope us then clear as we rise. We attain the summit Y Llethr in mist and rain.briandavies22/06/2015
Following Nuttalls route plus Moelfre.rhalstead25/05/2015
Low cloud visibility down to 30m rain on and off very strong winds. Parked in Cwm Nantcol near Pont Cerrig. Headed south on path ( not the marked bridle way shown on the OS map which is probably a Friday afternoon mistake) to Llyn Bodlyn up to cairn at 637224. Followed the wall over Diffwys S top, Diffwys, Crib-y-rhiw, Y Lethr and Rhinog Fach. Dropped down to Bwlch Drws-Ardudwy and back to the car. 19 km 1217m of ascent..didn't see a thing so will have to do it again in better weather.axe.stephen03/05/2015
Rhinogs run with Mark and Jack AgnewJim T02/04/2015
Day 2 Dragon's Back ReccieDinoF22/03/2015
Tal-y-bont to Barmouth Epic..Caddy200011/08/2014
On own. Rhinog Fach, Y Lethr, Crib-y-rhos and Moelfre from Cwm Nantcol. Brilliant walk on a sunny day - perfect walking conditions.Crib Goch19/04/2014
3rd of the day doing the full ridge. With Meds.bolton15/04/2014
CJM15/04/2014
Part of a traverse from the southcraigsmith8626/02/2014
756mThe Grouse28/12/2013
GOOD THING I'D DONE RHINOG FAWR SEPARATELY AS THE REST OF NUTTALLS WALK 9.1 WAS EXHAUSTING. WENT UP TO THE BWLCH FROM CWM NANTCOL AND UP CLEAR BUT VERY STEEP PATH ONTO RHINLG FACH. STEEP DESCENT AND RE-ASCENT ONTO Y LLETHR, THEN EASY WALKING OVER CRIB-Y-RHYW, DIFFWYS AND DIFFWYS W. TOP. DOWN FAIRLY EASILY TO THE DAM AND BACK OVER LOW COL TO CWM NANTCOL. FETCHED CAR FOR JOYCE WHO DECIDED SHE'D HAD ENOUGH SO WOULD PROVIDE TRANSPORT FOR NEXT DAY ON THE NANTLLE RIDGE.BURGESS19/08/2013
NNick Caunt08/06/2013
Claggy and windy despite the forecastgeoffreybbb04/05/2013
Diffwys West Top>Diffwys>Crib-y-rhiw>Y Lethr>Rhinog Fach>Craig y Llyn Hywel Fantastic 18km horseshoe together with JC, Spoons and Molly Moo with splendid scenery and weather. Saw two others throughout. Fantasic part of Wales away from the crowds.RichieRambler20/04/2013
CUHWC Dolgellau (Torrent Bunk Barn) Trip. Long solo linear walk from Cwm Nantcol - Rhinog Fach - Y Llethr - Diffwys - Diffwys W Top - Diffwys - Y Garn - Blaen-y-cwm - Llanelltyd - Dolgellau - Bunkhouse. T-shirt weather! An epic day.AGWilliamson02/03/2013
Rhinog Fawr, Rhinog Fach, Y Llethr, Crib-y-Rhiw, Diffwys (and west top)ijpowell17/08/2012
Spice Welsh Ridge walking weekendJanie14/07/2012
Yes, its certainly different from Rhinog Fawr and Fach! Last Nutall in the Rhinog region for me. Had the added bonus that although this is the wettest summer I've ever known, the rain held off today.Father Ted01/07/2012
From Cwm Nantcol.Marshsand26/04/2012
From Cwm Nantcol via Bwlch Drws Ardudwy and Rhinog Fach, then on to Diffwys. Cloud blotted out the views just as I arrived at the top.Herbert Anchovy12/04/2012
With Rhinog Fach and Diffws.clivevilla27/01/2012
From Dyffryn Ardudwy, small parking area at SH 60226 23076 - Y Llethr - Crib-y-rhiw - Diffwys - Diffwys West Top. Returned via Pont-Scethin.david23020123/10/2011
Last one of the day and a bit diapointing, flat grassy top, with a right scramble to get back to the road.heavyhorses31/08/2011
Car Park (£2) by farm in Cwm Nantcol – Nantcol – Ruined barn – Head for col and then make way up ridge to Rhinog Fawr – Rhinog Fach – Y Llethr – Crib-y-rhiw – Diffwys – Diffwys West Top – Llyn Bodlyn – Cross ridge back into Cwm Nantcol – Road walk of 1 mile back to car. (JL)gerrybowes14/06/2011
Part of 2-day N-S traverseDave10022/04/2011
As Nuttall walk 9.1mindlessflogger12/06/2010