Corn Du, seen from Pen y Fan

Last checked 20 October 2026 · Free, no sign-up

Pen y Fan from Pont ar Daf

The highest mountain in southern Britain, in Bannau Brycheiniog, not Eryri: the circular, parking, buses and the live forecast.

Corn Du, seen from Pen y Fan. Photo: Michael Wardlaw, CC BY-SA 4.0

Not in Eryri. Pen y Fan is in Bannau Brycheiniog (Brecon Beacons), south Wales (National Park Authority). The National Trust looks after the mountain and car park.

Pen y Fan at a glance

6.4 kmcircular (4 miles, National Trust)
886 msummit (National Trust)
3 hrs 30National Trust time
Moderatesteep steps near the top (National Trust)

The National Trust circular from Pont ar Daf: up to Pen y Fan, the highest point in southern Britain, then Corn Du and back.

The route

  1. Pont ar Daf car parkFootbridge over the river
  2. Bwlch Duwynt"Windy Pass", stone-pitched path
  3. The saddleViews down the Neuadd valley
  4. Pen y Fan886 m, highest in southern Britain
  5. Corn DuBronze Age cairn
  6. Tommy Jones' obeliskDown to the Blaen Taf Fawr stream
  7. Y Gyrn and Storey ArmsBack to the car park
The National Trust circular in order. Not a substitute for a map.
250 m500 m750 mPen y Fan, 886 mCorn DuPont ar DafBack to Pont ar Daf
Round the circuit from Pont ar Daf, including the out-and-back to Pen y Fan. Heights along the OpenStreetMap route line from Copernicus GLO-90 terrain data (via Open-Meteo); the 90 m grid smooths the sharpest points.
Pont ar DafPen y Fan, 886 mCorn DuY Gyrn
The National Trust circular as mapped in OpenStreetMap. Sketch only, not for navigation. Route lines © OpenStreetMap contributors.

Parking and getting there

Pont ar Daf car park (National Trust)

£7.50 a car, all day£10 motorhome or minibus£12 coach

National Trust parking page · JustPark location code 80651 (car)

Cwm Gwdi car park (National Trust)

£4 a car£8 motorhome or minibus

National Trust parking page · JustPark location code 80556 (car)

Spaces are limited: the National Trust asks you to use public transport where you can.

Plan your Pen y Fan day

1. Pick a day

Loading the live forecast…

Sunrise
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Sunset
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Daylight
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Latest safe start
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Forecast loading…

Best day this week

Our own guide, not an official rating: a weather score from the same rules of thumb as the warnings (gusts, rain, cloud, wind chill, freezing level), lowered on days that are usually busy. Busyness uses Eryri's 2025 walker counts by weekday and month, so it shows a typical pattern, not a crowd forecast. Tap a day to see it.

Sunrise hike: what time to start
Start walking by
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  • You will walk up in the dark: carry a head torch with spare batteries, and a second light. Eryri advises carrying a torch and whistle in case you are caught on a summit after dark.
  • It is much colder before dawn and at the top: pack extra warm layers.
  • Navigation is harder in the dark: know the path, and carry a map and compass and the skills to use them.
  • Early buses may not run yet: check the first bus time, or the parking rules, before you plan the start.
  • Go with others, tell someone your plan, and turn back if the weather is poor.
Hour-by-hour forecast: Pen y Fan summit (886 m)

Wind and gusts in mph. Freezing level in metres above sea level. Forecast data: Open-Meteo.

Before you go, also check the Met Office mountain forecast, MWIS.

2. Getting there

Map

The route map (OpenTopoMap) loads when you scroll here.

How busy it gets

Pages you have opened, and the last forecast, are kept on this device, so the plan still opens with no signal.

Before you go

Photos

Bwlch Duwynt, with Corn Du and Pen y Fan, under snow
Bwlch Duwynt, with Corn Du and Pen y Fan, under snow. Photo: Gareth James, CC BY-SA 2.0

Photos: Wikimedia Commons. Click a credit to see the original and its licence.

Mountains in Eryri

The six paths up Yr WyddfaGlyder FawrTryfanCadair IdrisCompare Eryri walks

Frequently asked questions

Is Pen y Fan in Snowdonia?

No. Pen y Fan is in Bannau Brycheiniog (the Brecon Beacons National Park) in south Wales, not in Eryri (Snowdonia). It is the highest mountain in southern Britain.

How long does it take to climb Pen y Fan?

The National Trust's Pen y Fan and Corn Du circular from Pont ar Daf is 4 miles (6.4 km) and takes about 3 hours 30 minutes.

How high is Pen y Fan?

886 m (2,906 ft), according to the National Trust.

Where do you park for Pen y Fan?

Pont ar Daf car park on the A470 (LD3 8NL), run by the National Trust: £7.50 a car for the day. Members, blue badge holders and motorbikes park free. Spaces are limited; the Cwm Gwdi car park is the other National Trust option.

Is there a bus to Pen y Fan?

Yes. The National Trust says the T4 and T14 buses run from Merthyr Tydfil or Brecon to Storey Arms, next to the start.

Can I take my dog up Pen y Fan?

Yes, on a close lead. The National Trust asks you to keep dogs on short leads near grazing livestock.

Sources

Every figure on this page was checked against these sources on 20 October 2026. Walker counts: there is no Eryri-style counter data for Pen y Fan, so the planner ranks days by weather only.

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