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Hiking trails & Routes

Vale of Glamorgan

The Knap – Porthkerry Viaduct loop from Cardiff Airport

Hiking trails & Routes

Vale of Glamorgan

The Knap – Porthkerry Viaduct loop from Cardiff Airport

Hard

4.4

(7)

25

hikers

The Knap – Porthkerry Viaduct loop from Cardiff Airport

05:11

19.2km

250m

Hiking

Hard hike. Very good fitness required. Easily-accessible paths. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: August 27, 2026

Waypoints

A

Start point

Bus stop

8.15 km

Knock-man-down Wood

Forest

2

12.3 km

The Knap

Highlight • Settlement

I love a duck so stood tall. Lovely area

Tip by

3

12.5 km

View of Knap Gardens Marine Lake

Highlight • Lake

4

12.7 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

14.1 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

14.7 km

Viaduct Wood

Forest

7

16.9 km

Bench With a View of the Sea

Highlight • Viewpoint

8

17.5 km

Rhoose Point

Highlight • Natural Monument

9

17.7 km

Rhoose Point – Southernmost Point of Mainland Wales

Highlight • Viewpoint

Located near the village of Rhoose in the stunning Vale of Glamorgan, Rhoose Point (Welsh: Trwyn y Rhws) stands as a captivating headland and settlement. Nestled in the southernmost reaches …

Tip by

10

17.8 km

Bench with View of Rhoose Lagoon

Highlight • Lake

Perfect bench for enjoying lunch and looking out over the cliffs

Tip by

B

19.2 km

End point

Bus stop

Way Types & Surfaces

Way Types

6.02 km

4.42 km

3.77 km

2.84 km

2.00 km

125 m

Surfaces

6.74 km

5.48 km

2.69 km

2.29 km

1.98 km

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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)

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Weather

Powered by Foreca

Tuesday 20 October

13°C

9°C

65 %

Additional weather tips

Max wind speed: 47.0 km/h

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