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Porthkerry Viaduct – Porthkerry Viaduct loop from Rhoose Cardiff International Airport

Routes

Running trails & routes

Porthkerry Viaduct – Porthkerry Viaduct loop from Rhoose Cardiff International Airport

Hard

runners

Porthkerry Viaduct – Porthkerry Viaduct loop from Rhoose Cardiff International Airport

02:02

18.7km

240m

Running

Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: May 10, 2026

Waypoints

Start point

Train Station

Get Directions

3.93 km

Porthkerry Viaduct

Highlight • Historical Site

The marvellous 16-arch Porthkerrry Viaduct stands at a whopping 110 feet (33m) high. It was designed and engineered by James and William Szlumper and was originally built to carry coal …

Tip by

5.32 km

Cold Knap Roman Site

Highlight • Historical Site

The monument consists of the remains of a Roman rectangular courtyard building dating to the 2nd or 3rd centuries AD.

It is located close to the beach at Cold Knap …

Tip by

5.59 km

View of Knap Gardens Marine Lake

Highlight • Lake

5.74 km

The Knap

Highlight • Settlement

I love a duck so stood tall. Lovely area

Tip by

9.03 km

Beach

9.67 km

Barry Island Promenade and Beach

Highlight • Beach

Of course it's touristy and commercial - but wonderful to see families out for the day enjoying sand and icecream and all things childhood

Tip by

10.4 km

Jackson Bay

Highlight • Viewpoint

This bay is very inset giving a stunning "tunnel" view across the estuary. A wonderful path meanders down and continues across the bay, offering further views onto the bay itself.

Wonderful!

Tip by

13.6 km

Porthkerry Viaduct has 16 arches and was eventually re-opened in 1900 after a faltering start when numerous supporting piers settled and had to be underpinned and reconstructed. It's been pretty solid since and now it's a Grade II listed building.

Tip by

18.7 km

End point

Train Station

Way Types & Surfaces

Way Types

6.05 km

5.59 km

3.05 km

2.13 km

1.11 km

402 m

396 m

Surfaces

6.91 km

4.75 km

4.55 km

1.45 km

616 m

Elevation

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

Highest point (60 m)

Lowest point (0 m)

Weather

Wednesday 24 June

34°C

22°C

0 %

Additional weather tips

Max wind speed: 22.0 km/h

to get more detailed weather forecasts along your route

Comments

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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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Porthkerry Viaduct – Porthkerry Viaduct loop from Rhoose Cardiff International Airport

Porthkerry Viaduct

Cold Knap Roman Site

View of Knap Gardens Marine Lake

The Knap

Barry Island Promenade and Beach

Jackson Bay

Barry Castle

Porthkerry Viaduct

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