Mynydd y Graig & Porth Ysgo loop from Plas yn Rhiw — Llŷn

Hiking trails & Routes

Mynydd y Graig & Porth Ysgo loop from Plas yn Rhiw — Llŷn

Moderate

4.5

(6)

hikers

Mynydd y Graig & Porth Ysgo loop from Plas yn Rhiw — Llŷn

03:04

10.5km

290m

Hiking

Embark on the Mynydd y Graig & Porth Ysgo loop from Plas yn Rhiw, a moderate hike spanning 6.5 miles (10.5 km) with 961 feet (293 metres) of elevation gain, typically taking around 3 hours and 4 minutes. This route offers a rich blend of landscapes, from paths across fields…

Last updated: April 23, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

AHNE Llŷn

Waypoints

Start point

Parking

Get Directions

188 m

Plas yn Rhiw Manor House and Gardens

Highlight • Monument

Plas yn Rhiw is a 16th-century manor house tucked up in the hill above Porth Neigwl. Now under the care of the National Trust, the house has beautiful, ornamental gardens …

Tip by

2.16 km

Graig Fawr Rocky Outcrop

Highlight • Natural Monument

Graig Fawr's rocky outcrop towers above the coast path and looks out to sea. It's right next to some seemingly out-of-place sewage treatment works which must be one of few such works with such outstanding views.

Tip by

5.92 km

Porth Ysgo Beach, Waterfall and Caves

Highlight • Cave

Porth Ysgo is a little beach hidden in the craggy cliffs of the Llŷn Peninsula. The coast path crosses it and after a lot of rain, the waterfall is quite …

Tip by

10.5 km

End point

Parking

Way Types & Surfaces

Way Types