Bannau Brycheiniog National Park, Powys, Wales
Pen y Fan is the highest peak in southern Britain. Old red sandstone holds water like peat — the plateau paths can be ankle-deep after rain. RambleMetric tells you exactly what you are walking into.
About Brecon Beacons
RambleMetric is a real-time conditions app built for inland walkers. It combines live weather, ground moisture, mud risk, visibility and path conditions into a single Visit Score — helping you plan visits to Pen y Fan and the Brecon Beacons moorland.
The Brecon Beacons are open peat moorland on old red sandstone up to 886 m. Weather, visibility and ground conditions can change rapidly. The plateau can be disorienting in mist. Data shown is gathered from third-party sources and may not reflect current on-the-ground conditions.
Walking Routes
Check the live Visit Score before you set out — conditions here change fast.
The direct route from Pont ar Daf to Pen y Fan (886 m) via the eroded main path. Clear in good conditions; deeply boggy after rain on the lower approach. The north face drops sheer from the summit — stay on the marked path.
Storey Arms to Corn Du (873 m) — slightly shorter than Pen y Fan but still a significant moorland walk with full escarpment exposure. A good option when the main summit is in cloud.
Key Features
886 m — highest peak in southern Britain and one of the most visited hills in Wales. The distinctive flat-topped summit plateau drops in a sheer north-facing escarpment over 200 m to Neuadd Reservoir.
The neighbouring summit at 873 m — usually linked with Pen y Fan in a circuit. A Bronze Age cairn sits at the summit. The view back to Pen y Fan from here is exceptional.
A remote glacial lake below the Black Mountain ridge. Associated with the Arthurian legend of the Lady of the Lake. Reachable from Llanddeusant — a 6 km walk in.
The Mellte and Hepste gorges south of the Beacons hold six major waterfalls including Sgwd yr Eira — you can walk behind it. A very different Beacons experience from the ridge walking.
Live Data
All data is fetched from authoritative UK sources and recalculated every few minutes.
Safety Information
Always carry a map, compass and waterproofs. Pen y Fan's north face drops steeply from the summit plateau — do not approach the edge in poor visibility. The Storey Arms path is the most popular but can be extremely busy and deeply eroded. SAS selection exercises take place in the Beacons — if you encounter military activity, keep well clear.
All data, scores and recommendations are for general informational purposes only and should not be relied upon as the sole basis for safety decisions. The Visit Score is an algorithmic estimate — it is not a substitute for your own judgement, local knowledge, or official guidance.
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