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Arenig Fawr


Quick Facts
This is the height of the mountain above sea level. However, on the climb, it is the ascent that matters, i.e. the sum of all the uphill parts of the route.
854 m (2801 ft)

This is the standard notation used on Ordnance Survey Landranger maps.

Each reference consists of two letters identifying a 100,000 metre square block then three digits defining the Easting and finally the three digits defining the Northing with reference to the South West corner of the block.

NN166712 is the grid reference for the summit of Ben Nevis. Where you are given the map number ( For Ben Nevis = 41) it is acceptable to omit the two initial letters e.g. 166712. (Instructions on how to read the references are given on the OS maps).

Grid Ref.
An indication of this mountains height rank within its class. Where two mountains share the same height they are ordered alphabetically.
The number of ascent routes currently available on Munromagic.
Mountain names are usually in Gaelic, the native language of the Scottish Highlands, or have been derived from the old Scots and Norse languages. We give the most commonly accepted meaning, but accept that some of these are disputed.
Arenig = kidney like, Fawr (=Mawr) is probably mythical name

The UK is covered by 204 Ordnance Survey Landranger 1:50,000 scale maps. Maps numbered 1 to 86 cover Scotland but for the highest mountains (Munros) only 23 maps are required. The name given roughly describes the area covered by the map.

OS Landranger Maps Required
  124   Dolgellau & Porthmadog
  125   Bala & Lake Vyrnwy, Berwyn

A description of the characteristics of the mountain including any hazards of which you should be aware.

Arenig Fawr (2500ft+) is the highest point on a broad and isolated ridge which extends S for about 5 km from Llyn Celyn reservoir NW of the town of Bala, near the E margin of the Snowdonia National Park (Wales). Arenig Fawr has craggy outcrops on its flanks, especially towards the N, but these can be bypassed and the mountain climbed from any direction.

To the NE is Llyn Arenig Fawr, a small circular reservoir 600m in diameter; and the best ascent route follows its E shore southwards before ascending by a short E spur then diagonally across the mountainside. Beside the trig point is a cairn built around a monument in memory of 8 American airmen who lost their lives in August 1943 when their Flying Fortress hit the mountain just W of the summit.

Hazards you may encounter on Arenig Fawr include
 Crags within 1km of summit.
General Considerations
 Temperature decreases by 1degree C for every 100m of ascent.
 Wind usually increases with altitude.
 Visibility can change markedly with cloud level.
 River/Stream levels can increase markedly in one day.
A special thank you to David S Brown for his work on this and all of the England/Wales information.
Picture Gallery for Arenig Fawr

A selection of weather forecasts local to #GetMountain.Top_Name#.

Ordnance Survey digital maps are also available to members.

 Weather & OS Maps
by MWIS (PDF format)
by Met Office
Cader Idris
by Metcheck
Arenig Fawr Area Map
Legend  Munro  Corbett  Graham  English/Welsh Top  Accommodation

A selection of local accommodation options who advertise with Munromagic.com.

 Where to Stay
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sponsored accommodation listings for this area.

The summary information of one or more ascent routes that include Arenig Fawr.

Click on the route title to load the full content for that route.

 Routes that include Arenig Fawr
  Ascent Distance Time Including... Description Rating
1 510 m 9.46 km 3 hrs Arenig Fawr  An easy short route to a seldom-visited hill, paths are sketchy or non-existent. Not Yet Rated 

Pictures submitted by members on the summit of Arenig Fawr

 Baggers Gallery for Arenig Fawr

Me on the top of Arenig Fawr, between the trig point and the plaque in memory of 8 US airmen who died when their plane hit the mountainside. Celebrating my completion of all 43 'England/Wales' mountains (on MunroMagic) with a wee dram!

© David S Brown

Image by David S Brown

Me on Arenig Fawr

© Gareth Pratt

Image by Gareth Pratt
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Recently Climbed By
Adam Rixon on 26 Sep 2020

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