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Porthgain Harbour – Porthgain Quarry Ruins loop from Carreg Samson

Routes

Running trails & routes

Porthgain Harbour – Porthgain Quarry Ruins loop from Carreg Samson

Hard

runners

Porthgain Harbour – Porthgain Quarry Ruins loop from Carreg Samson

02:18

20.1km

360m

Running

Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is right next to a parking lot.

Last updated: April 25, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Pembrokeshire Coast National Park

Waypoints

Start point

Parking

Get Directions

26 m

Melin Trefin to Abercastle Coastal Walk

Highlight (Segment) • Trail

4.42 km

Llwynog Arian Stone Circle

Highlight • Monument

There are a few stories about the origins of Llwynog Arian Stone Circle. It's not typical, having only 11 stones instead of 12. Accordingly legend has it that the 12th …

Tip by

6.97 km

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 …

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7.71 km

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 …

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10.0 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. …

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15.8 km

Pembrokeshire Coast Scenic Viewpoint

Highlight • Trail

Covering nearly 217 miles (350 km)
in total, this trail takes in scenic jaunts through coastal towns and picturesque countryside. Our pick is the stretch from Fishguard westwards to St David’s.

Tip by

16.0 km

Melin Trefin Mill Ruins

Highlight • Historical Site

Thought to date from the 15th century, the ruins of Aberfelin Mill are a vestige of the region's industrial past. The mill was used to grind wheat and barley and …

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16.5 km

The slate quarry itself was beyond the cliff edge, north of the buildings. There was also an inland pit to the east, along with a short length of railway track running between the cliff and quarry buildings.

Tip by

20.1 km

End point

Parking

Way Types & Surfaces

Way Types

8.72 km

6.42 km

4.05 km

628 m

252 m

< 100 m

Surfaces

10.0 km

7.93 km

754 m

627 m

418 m

349 m

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Weather

Thursday 9 July

26°C

14°C

0 %

Additional weather tips

Max wind speed: 15.0 km/h

to get more detailed weather forecasts along your route

Comments

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Porthgain Harbour – Porthgain Quarry Ruins loop from Carreg Samson

Melin Trefin to Abercastle Coastal Walk

Llwynog Arian Stone Circle

Porthgain Harbour

Porthgain Quarry Ruins

Abereiddy Beach

Pembrokeshire Coast Scenic Viewpoint

Melin Trefin Mill Ruins

Trefin Quarry Ruins

Nearby routes

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