View of Cadair Idris Ridge – Cadair Idris ascent/descent loop from Tŷ Nant

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View of Cadair Idris Ridge – Cadair Idris ascent/descent loop from Tŷ Nant

Hard

runners

View of Cadair Idris Ridge – Cadair Idris ascent/descent loop from Tŷ Nant

01:32

9.31km

700m

Running

Hard run. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required. The starting point of the route is right next to a parking lot.

Last updated: August 7, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Cader Idris National Nature Reserve

Parc Cenedlaethol Eryri

Waypoints

Start point

Parking

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169 m

View of Cadair Idris Ridge

Highlight • Viewpoint

Stunning vistas of the Cadair Idris range and of Cregennan Lakes.

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2.84 km

Descent from Cadair Idris Summit

Highlight (Segment) • Summit

This is an hideous carry/push along the plateau to the summit, but if you like it slatey and rocky and technical, you'll find much to enjoy here on the way …

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4.55 km

Cadair Idris summit trig point

Highlight • Natural Monument

A triangulation station, also known as a trigonometric point, or sometimes informally a trig, is a fixed measurement point used in geodetic surveys and other land surveying projects in the …

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4.58 km

Summit shelter on Cader Idris

Highlight • Mountain Hut

Just below the rocky summit stands a sturdy stone hut. It is a modern version of a 19th-century hut that became famous through an old lady who climbed to the …

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4.63 km

Penygadair summit, Cadair Idris

Highlight • Summit

Complex and striking, Cadair Idris is the Yr Wyddfa (Snowdon) of southern Eryri (Snowdonia): a honeypot mountain renowned for its imperious cliffs, enticing ridges and pretty tarns. It is a …

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4.85 km

Cadair Idris ascent/descent

Highlight • Natural Monument

This last climb is very difficult due to the many loose stones and rocky ground.

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4.92 km

View of Llyn y Gadair from Cyfrwy Ridge

Highlight (Segment) • Viewpoint

From the ridge between the summits of Cyfrwy and Cadair Idris there is an impressive view of the lake Llyn y Gader deep down under the cliffs. Watch your step, …

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