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Llyn Mawr – Nant y Llyn Mawr Ford loop from Dwyriw

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Mountain biking trails

Llyn Mawr – Nant y Llyn Mawr Ford loop from Dwyriw

Easy

riders

Llyn Mawr – Nant y Llyn Mawr Ford loop from Dwyriw

01:14

14.5km

250m

Mountain biking

Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

Last updated: May 21, 2026

Waypoints

Start point

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8.77 km

The centerpiece of the Llyn Mawr Nature Reserve is the upland lake known as Llyn Mawr, which means 'big lake' in Welsh. It supports a diverse array of aquatic plants including Bogbean, Yellow Water-lily and the rare Quillwort, found only in Montgomeryshire.

Llyn Mawr is one of three lakes within a Site of Special Scientific Interest, situated high on the moorland plateau above the Carno Valley. At this spot you'll find a small boardwalk where you can enjoy close-up views of the lake.

Tip by

11.3 km

Nant y Llyn Mawr Ford

Highlight • River

Here, you'll cycle over a small ford that is part of Nant y Llyn Mawr, a tributary of the River Rhiw. This stony track will lead you north towards the Rhiw, a small river meaning 'slope'.

Tip by

11.5 km

Waun y Llyn Upland Track

Highlight (Segment) • Viewpoint

This rugged gravel track crosses from the Rhiw to the Carno Valley. To the north, you'll enjoy views of Garreg-hir, a summit rising to 1,588 ft (484 m).

Tip by

14.5 km

End point

Way Types & Surfaces

Way Types

8.77 km

5.56 km

171 m

Surfaces

9.12 km

4.11 km

1.10 km

171 m

Elevation

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

Highest point (440 m)

Lowest point (240 m)

Weather

Friday 26 June

24°C

14°C

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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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Llyn Mawr – Nant y Llyn Mawr Ford loop from Dwyriw

Llyn Mawr

Boardwalk to Llyn Mawr

Llyn Mawr

Nant y Llyn Mawr Ford

Waun y Llyn Upland Track

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