Garth Summit – Radyr Weir loop from Radyr

Hiking trails & Routes

South Wales

Radyr and Morganstown

Garth Summit – Radyr Weir loop from Radyr

Moderate

4.8

(6)

hikers

Garth Summit – Radyr Weir loop from Radyr

04:57

17.0km

440m

Hiking

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

Last updated: September 9, 2026

Waypoints

Start point

Train Station

Get Directions

7.03 km

View of Garth Mountain from Route des Alpes

Highlight • Viewpoint

The road to the South of Garth Mountain is named the "Route Des Alpes" on Google maps. I'm thinking it isn't genuine, but I like it!

The views from the …

Tip by

7.47 km

Garth Summit

Highlight • Viewpoint

Stunning little hill with commanding views just outside Cardiff with a trig pointed summit. It is a UK listed Marilyn.

Tip by

8.67 km

View of Taff Vale and Nantgarw from Rocky Descent

Highlight • Viewpoint

Rocky, narrow, but very scenic, descent into the woods with some glorious views across the Taff Vale toward Nantgarw.

Tip by

9.19 km

Carved Tree Face

Highlight • Natural

This tree carving is masterful and the size of an adult. Its remote location imbues an aura of mysticism.

Tip by

9.58 km

Gwaelod Y Garth Inn

Highlight • Pub

Good food, super friendly and thirst quenching.

Tip by

13.3 km

Fforest Fawr Information Board

Highlight • Rest Area

13.6 km

Castell Coch

Highlight • Castle

Castell Coch is a 19th-century castle overlooking the village of Tongwynlais. Whilst there has been a castle on the site since the Norman period, architect William Burges transformed the crumbling …

Tip by

15.8 km

River Taff

Lake

16.2 km

Radyr Weir

Highlight • Structure

A pretty weir of the River Taff, the Radyr Weir runs today as a hydro power scheme and a focal point of Radyr town. Many wild salmon and sea trout …

Tip by

17.0 km

End point

Train Station

Way Types & Surfaces

Way Types

7.55 km

4.84 km

2.68 km

1.31 km

597 m

< 100 m

Surfaces

6.38 km

5.81 km

1.55 km

1.44 km

1.14 km

646 m

Elevation

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

Highest point (300 m)

Lowest point (20 m)

Weather

Tuesday 20 October

11°C

5°C

88 %

Additional weather tips

Max wind speed: 33.0 km/h

to get more detailed weather forecasts along your route

Comments

October 11, 2025,The Garth Summit – Castell Coch loop from Radyr

Radyr (Rah-dir)….what can I say ?
We loved every bit of Radyr (Rah-dir), Taffs Well….etc
For some of us, this was our first time in Wales 🏴󠁧󠁢󠁷󠁬󠁳󠁿
The Loop had everything we wanted….
• The Garth Hill (Mynydd y Garth) at just over 1,000ft was perfect 👌…just as were the equally challenging descents ! But together @ Team Acorn conquered …