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Hiking trails & Routes

Rhondda Cynon Taf

Mountain Ash East

Twyn Brynbychan Trig Point – Giant's Bite loop from Mountain Ash

Hiking trails & Routes

Rhondda Cynon Taf

Mountain Ash East

Twyn Brynbychan Trig Point – Giant's Bite loop from Mountain Ash

Moderate

4.8

(5)

14

hikers

Twyn Brynbychan Trig Point – Giant's Bite loop from Mountain Ash

04:26

14.6km

470m

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: August 6, 2026

Waypoints

A

Start point

Train Station

1

1.27 km

Gillies Trail Waterfall

Highlight • River

Gillies Trail and Waterfall in Caegarw, Mountain Ash.
Not many people are aware of the path that leads up to the mountain behind Caegarw and the impressive waterfall that is …

Tip by

2

4.25 km

Forest Path with Views of Merthyr Tydfil, Merthyr Vale, and Aberfan

Highlight • Trail

stunning views of Merthyr Tydfil, Merthyr Vale and Aberfan .

Tip by

3

5.35 km

Twyn Brynbychan Trig Point

Highlight • Natural Monument

We walked miles. Up to the waterfall on Gillies trail, followed the path up onto the rocky and then to the trig point on Twyn Brynbychan, above the cynnon valleys. …

Tip by

4

8.35 km

Giant's Bite

Highlight • Viewpoint

High above the A470 to the north of Quaker’s Yard, the Giant’s Bite is a dramatic gap in the skyline quarried from the ridge top at the former Cefn Glas …

Tip by

B

14.6 km

End point

Train Station

Way Types & Surfaces

Way Types

7.32 km

5.62 km

1.03 km

668 m

Surfaces

11.8 km

1.46 km

586 m

473 m

217 m

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Elevation

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

Highest point (410 m)

Lowest point (110 m)

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Weather

Powered by Foreca

Tuesday 6 October

14°C

7°C

89 %

Additional weather tips

Max wind speed: 26.0 km/h

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