Tre'r Ceiri

Tre'r Ceiri

Tre'r Ceiri Group Walks | Join a Walk

485m Elevation
65m Prominence
Wales Country

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Classifications

400-499m Tump

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Don't walk alone! Find friendly walkers to explore Tre'r Ceiri together. Join scheduled group walks or start your own.

Elevation

485m

1,592 ft

Prominence

65m

Coordinates

52.9752, -4.4225

SH374447

OS Map

123

Explorer: 253 254

At the Summit

The summit boasts a historic stone fort and a prominent cairn, which has become a popular backdrop for photos—everyone loves a good selfie with history!

Terrain & Geology

Varied; includes rocky outcrops grassy paths and the occasional boggy section to keep your feet guessing.

Tre'r Ceiri is composed primarily of volcanic rock, specifically rhyolite, which tells a story of immense geological activity. The exposure of these rocks showcases fascinating features like columnar jointing, shaped as if nature were showing off its sculpting skills.

Views & Scenery

From the summit, you can spot the stunning peaks of Snowdonia, the expansive views of the Llyn Peninsula, and even the shimmering waters of the Irish Sea on a clear day.

History & Heritage

Name Origin

Tre'r Ceiri translates to 'Homestead of the Giants', hinting at its mythical connections and past folklore.

Historical Significance

The site of an Iron Age hill fort at the summit indicates historical significance, providing insight into ancient communities.

Popular Routes

Classic Tre'r Ceiri Circular Route

Moderate

This popular circular route starts from the car park near Llanaelhaearn (grid ref SH3743944723) and follows a well-trodden path up to Tre'r Ceiri. The trail ascends gradually, providing stunning views of the Llyn Peninsula and the Irish Sea. Upon reaching the summit, walkers can explore the well-preserved Iron Age hillfort before descending via a different route back to the car park.

7 km 2.5 hours

Tre'r Ceiri from Yr Eifl Car Park

Easy to Moderate

This straightforward out-and-back route begins at the Yr Eifl car park and follows a clear path leading directly to Tre'r Ceiri. The path climbs steadily, passing through heather moorland and offering panoramic views of Snowdonia and the coast. The summit rewards walkers with a fascinating glimpse into ancient history, thanks to the impressive hillfort remains.

5 km 2 hours

Yr Eifl and Tre'r Ceiri Ridge Walk

Moderate to Challenging

This scenic ridge walk combines Tre'r Ceiri with its neighbouring peak, Yr Eifl. Starting from the car park near Llithfaen, this route takes you up Yr Eifl first before traversing the ridge to Tre'r Ceiri. The trail involves some steep sections but rewards walkers with spectacular views of the Irish Sea, the Llyn Peninsula, and Snowdonia. The descent loops back to the starting point.

8.5 km 3.5 hours

Tre'r Ceiri via Nant Gwrtheyrn

Challenging

Starting at the Nant Gwrtheyrn Heritage Centre, this route climbs steeply through wooded paths and open moorland towards Tre'r Ceiri. The ascent is challenging but rewarding, with incredible views of the Llyn Peninsula coastline and the preserved hillfort at the summit. The descent follows a similar path back to the starting point.

6 km 3 hours

Tre'r Ceiri and Bwlch Yr Eifl Loop

Moderate to Challenging

This loop route begins at the car park near Llithfaen and takes walkers through Bwlch Yr Eifl before ascending Tre'r Ceiri. The trail offers a mix of terrains, including grassy paths and rocky sections, with breathtaking views throughout. After exploring the hillfort, the descent circles back via an alternative path through the bwlch.

9 km 4 hours

Getting There & Facilities

Parking

Parking available at Llithfaen Village (SH360429), where space is generally sufficient but can fill up on sunny weekends.

Public Transport

Buses run from Pwllheli to the nearby village, but check the schedule as they can be infrequent—don’t rely on the bus as your only ride!

Nearby Facilities

There are no toilets on the mountain itself, but you will find facilities in Llithfaen and Pwllheli, including cafes and shops for refreshment.

Safety Information

Known Hazards

  • Beware of steep drops near the fort; the winds can be brisk, and the weather can change rapidly—always be prepared!

General Safety Tips

  • Check weather conditions before setting out
  • Carry appropriate clothing and equipment
  • Let someone know your planned route
  • Take a map, compass, and GPS device
  • Carry emergency supplies: food, water, first aid kit, torch

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Hills

Some common questions about the hills answered

Are there group walks up Tre'r Ceiri?

Many walkers use Walkmates to join or organise walks with others. You can check for group walks around Tre'r Ceiri through the maps

Are there other walkers around Tre'r Ceiri?

Activity varies by location and time, but Walkmates lets you see whether others have shared walks or shown interest in this area. Find other people through the walking friends search walking friends for Tre'r Ceiri search or of course create your own walk for Tre'r Ceiri

Can I organise a walk to Tre'r Ceiri?

Yes. If there aren’t any walks listed already, you can create a walk and make it available for others to join.

If you're signed up to Walkmates, you can create a walk to Tre'r Ceiri.

How do I find a walk up this hill?

There are often multiple ways to walk this hill, depending on experience and route preference. Walkmates helps you explore walks and routes that others have shared.

Can I suggest a new route up Tre'r Ceiri?

Yes. You can suggest or create routes to share with others. Walkmates focuses on the social side of walking, so routes are used to help people organise walks and explore areas together, rather than as detailed navigation tools or route libraries.

Other uses really appreciate knowledgeable walkers sharing their routes. Share your favourite route to Tre'r Ceiri here

The is an error or something incorrect about this hill. How do I let you know?

We always strive to keep the information on Walkmates as accurate as possible. If you find an error, please let us know through the contact form and we'll aim to correct it as quickly as possible