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Hiking trails & Routes
United Kingdom
Wales
South Wales
Pembrokeshire
Llanrhian

Porthgain to Abereiddi Coastal Walk

Easy

4.8

(55)

352

hikers

Porthgain to Abereiddi Coastal Walk

01:48

6.64km

90m

Hiking

Embark on the Porthgain to Abereiddi Coastal Walk, an easy hiking route that offers a refreshing journey along the Pembrokeshire coastline. This trail spans 4.1 miles (6.6 km) with an elevation gain of 308 feet (94 metres), typically taking about 1 hour and 48 minutes to complete. You will experience rugged cliffs and open grasslands, leading you to the striking Blue Lagoon at Abereiddi, a former slate quarry known for its vivid, shimmering water.

To begin your adventure, you can park conveniently at Abereiddi Beach, which serves as an accessible starting point for the route. Although the trail is rated easy, be aware that it includes some sections with steep climbs, descents, steps, and stiles, which may feel more moderate in places. Always exercise caution when you are near cliff edges and any overhangs along the path. This makes it a great choice for a shorter outing, perhaps in the morning or late afternoon.

Beyond its natural beauty, the route also tells a story of the region's industrial past. As you hike, you will encounter remnants of Porthgain's history, including impressive brick hoppers and quarry ruins that speak to its busy fishing and quarrying days. Keep an eye out for diverse wildlife, such as choughs, which are often spotted in this coastal environment, adding another layer of interest to your walk.

Last updated: April 23, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Pembrokeshire Coast National Park

Waypoints

A

Start point

Parking

Get Directions

1

105 m

Porthgain Harbour

Highlight • Settlement

Porthgain is a treat to visit. Once a small commercial harbour used for exporting stone from the nearby quarry, it now offers visitors a great pub, a super cafe/restaurant and excellent art galleries. Great coastal views and interesting industrial ruins complete the package.

Tip by

2

763 m

Porthgain Quarry Ruins

Highlight • Historical Site

The harbour of Porthgain was built to ship slate, bricks and granite for use on houses and roads. The English translation of Porthgain is 'Chisel Port', in reference to its quarrying past. This quarry was used for granite and its ruined buildings are an evocative sight above the blue of the Irish Sea.

Tip by

3

2.11 km

Traeth Llyfn Beach

Highlight • Viewpoint

Traeth Llyfn is a pretty, sandy and rocky beach between Porthgain and Abereiddi.

The beach, backed by towering cliffs, is reached by very steep metal stairs but provides plenty of room for ball games and activities like flying a kite. There are rock pools to explore as well.

Tip by

4

2.84 km

View of the Blue Lagoon from the Cliffs

Highlight • Natural Monument

Stunning views from here over the Blue Lagoon, a flooded former slate quarry with deep blue water.

Watch the coasteering, kayakers swimmers and paddleboarding from the top while deciding whether or not you've got the nerve for the jump from the walls at the entrance of the quarry.

See if you can spot the fixing point for the Red Bull diving platform that took place from the cliff side at a height of about 27 metres.

Tip by

5

3.10 km

Blue Lagoon, Abereiddy

Highlight • Natural Monument

The blue lagoon is a former slate quarry. These days, it's a beautiful place with deep blue water. The lagoon is a great place for water sports, including swimming and paddleboarding.

You can park at Abereiddy Beach car park which is a short walk around the corner. It costs £4 between 8am-5pm and is unattended outside these hours. Alternatively, it's a great place to stop off along the coastal path.

Tip by

6

3.45 km

Abereiddy Beach

Highlight • Parking

Famous for its black sand, Abereiddy Beach is located in a sheltered bay. This is where you’ll find the Blue Lagoon which is just a short walk around the corner. It's a great place to watch the sunset from.

Parking is charged £4 between 8am-5pm through the summer and is free outside these times.

Tip by

B

6.64 km

End point

Parking

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Way Types & Surfaces

Way Types

3.05 km

2.89 km

409 m

290 m

Surfaces

6.23 km

400 m

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Elevation

Elevation

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Tuesday 5 May

12°C

9°C

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This route was planned by komoot.

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Frequently Asked Questions

How long does it take to complete the Porthgain to Abereiddi Coastal Walk?

This coastal walk typically takes around 1 hour and 48 minutes to complete. However, allow extra time to explore the various points of interest, such as the Blue Lagoon and the Porthgain Harbour.

What is the difficulty level and terrain like on this coastal walk?

The Porthgain to Abereiddi Coastal Walk is generally considered moderate. While much of it follows level, grassy clifftop paths, you will encounter some steep climbs and descents, steps, stiles, and kissing gates. The route involves a total elevation gain of about 94 meters. Caution is advised near cliff edges.

Where can I park for the Porthgain to Abereiddi Coastal Walk?

Parking is available at both Porthgain and Abereiddi. Abereiddy Beach is a known parking spot. Both villages offer convenient access to the trailhead.

What are the main points of interest along the route?

This walk offers a blend of natural beauty and industrial heritage. Key highlights include the historic Porthgain Harbour and its Quarry Ruins, the stunning Blue Lagoon at Abereiddy (a former slate quarry), and the secluded Traeth Llyfn Beach. You'll also enjoy dramatic coastal views, especially from the View of the Blue Lagoon from the Cliffs.

Is the Porthgain to Abereiddi Coastal Walk dog-friendly?

Yes, the trail is generally dog-friendly. However, please keep dogs on a lead, especially near cliff edges, livestock, and to protect local wildlife. Be mindful of stiles and steps that might be challenging for some dogs.

What is the best time of year to hike this trail?

The Porthgain to Abereiddi Coastal Walk can be enjoyed year-round, but spring and summer offer the best weather conditions for coastal hiking, with wildflowers in bloom and warmer temperatures. Autumn can also be beautiful with fewer crowds. Always check the local weather forecast before you go, as conditions can change rapidly on the coast.

Are there any permits or entrance fees required for this walk?

No, there are no specific permits or entrance fees required to walk the Porthgain to Abereiddi Coastal Walk. It is part of the Pembrokeshire Coast National Park, which is freely accessible to the public.

Does this trail connect with other well-known paths?

Yes, this route is a significant section of the wider Pembrokeshire Coast Path. It also overlaps with parts of the Porthgain to Abereiddi Coastal Walk, North Pembroke trail.

Can I swim in the Blue Lagoon or Traeth Llyfn Beach?

The Blue Lagoon is a popular spot for coasteering, kayaking, and swimming, often done with organized groups due to its deep, cold water. Traeth Llyfn Beach is beautiful but not recommended for swimming due to strong rip currents.

What kind of wildlife can I expect to see along the way?

Beyond the dramatic geology, the area is home to diverse wildlife. Keep an eye out for various seabirds, including choughs and linnets, which are often spotted along the clifftops.

Are there any facilities like cafes or pubs near the trail?

Yes, both Porthgain and Abereiddi offer facilities. Porthgain, in particular, has a popular pub and a cafe, perfect for refreshments before or after your walk. Abereiddi also has some amenities, especially during peak season.

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