Routes up
Pen Allt-mawr routes: 4 ways to the top
Pen Allt-mawr CircularHiking · 12km · from CrickhowellModerate
This circular route takes you over Pen Allt-mawr and offers stunning views of the Black Mountains, the path is well-trodden and marked.
Pen Allt-mawr via Waun FachHiking · 14km · from CwmduModerate
This route ascends via Waun Fach and provides a challenging hike with rewarding views, it is less frequented and offers solitude.
Pen Allt-mawr Ridge WalkHiking · 16km · from Grwyne Fawr ReservoirHard
This ridge walk covers multiple peaks including Pen Allt-mawr, it is a demanding route with steep ascents and descents.
Pen Allt-mawr ScrambleScrambling · 10km · from LlangennyGrade 1 Scramble
This scramble route involves some hands-on sections and is suitable for experienced scramblers, it offers a more adventurous ascent.
Summit today
Is it safe to climb Pen Allt-mawr today?
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Cloud inversion · 7 days
The chance of standing above a sea of cloud on Pen Allt-mawr each morning this week, from overnight temperature, humidity and low cloud below the 720m summit.
Dark sky · 7 days
How dark the sky gets over Pen Allt-mawr each night this week, from cloud cover, moonlight and local light pollution.
Snow · 7 days
No snow is forecast at the summit in the next 7 days.
Sun today
Sunrise 07:00, sunset 16:52
9h 52m of daylight. Golden hour ends 07:49 and starts 16:03. From the summit you see the sun 06:54 to 16:57.
Nearby summits
Close to Pen Allt-mawr
About Pen Allt-mawr
Pen Allt-mawr is 720 m (2,361 ft) high with 104 m of prominence. It is in Llandovery to Monmouth, Wales. OS grid reference SO206243. It is the 2nd highest of the 39 summits Peakify lists in Llandovery to Monmouth. The nearest summits are Pen Twyn Glas (1.6 km), Pen Cerrig-calch (2.1 km) and Mynydd Llysiau (3.6 km).
How high is Pen Allt-mawr?
Pen Allt-mawr is 720 metres high with 104 metres of prominence.
Where is Pen Allt-mawr?
Pen Allt-mawr is listed in Llandovery to Monmouth, Wales.
Are there routes for Pen Allt-mawr?
Peakify lists 4 routes for Pen Allt-mawr, including available distance, ascent, start point, and difficulty details. The easiest is Pen Allt-mawr Circular (12km, Moderate).
Is it safe to climb Pen Allt-mawr today?
Peakify rates each day on the summit Good, Marginal or Poor from the forecast summit wind, gusts, chance of rain and wind chill. Wind of 40 mph or gusts of 65 mph make it Poor; wind of 25 mph, gusts of 45 mph, a 60% chance of rain or a feels-like temperature of -8°C or below make it Marginal. Today's and tomorrow's ratings are at the top of this page. The rating covers the weather only: also check your route, daylight, kit and experience, and in winter whether you need an ice axe and crampons.
What weather information is shown for Pen Allt-mawr?
The page includes cached mountain forecast context, snow outlook, dark-sky signals, cloud-inversion information, sunrise, sunset, and summit planning details where available.
Peakify is run by Sam Tyler, who has climbed Yr Wyddfa 22 times. The forecast refreshes every hour; how our forecast works.
