The Pen Trwyn cliffs form a near 1.5km line of high quality buttresses and sectors, perched proudly above the Marine Drive and offering fine views across Llandudno Bay and the Irish Sea. The climbing is extensive and is a mix of both traditional and sport climbing, the majority being single-pitch and the mid to higher grades.
Upper Pen Trwyn is a good place to seek out some dry climbing if the weather in the mountains is poor, although there is not much scope for climbing when it is actually raining at the crag. Climbing is possible throughout the year although in summer the sunnier sectors can become extremely hot. In winter or during cool periods, the east and north-facing sectors can be windy and/or cold. Seepage is generally not a problem.
On entering Llandudno, head for the sea front from where the curving line of cliffs of Pen Trwyn on the headland to the west are easily viewed. Upper Pen Trwyn is above the Marine Drive, a one-way road that runs around the headland. To get onto the Marine Drive, turn left along the sea front and continue around to a toll gate (fee). The Upper Pen Trwyn cliff starts around 100m on from the toll gate. From here, the cliff is fairly continuous for the next mile and it is possible to park very close to each sector, however take great care not to block the road.