Dyfi Forest - Ceinws (Climachx), near Machynlleth

What's here


The Climachx mountain bike trail is situated near the village of Ceinws within the spectacular landscape of Dyfi Forest.

This 15 kilometre, red-graded trail is known for its singletrack and final descent.

The trail is managed by Dyfi Mountain Biking, a local community group, and is easy to find from the A487.

Mountain bike trail

All our mountain bike trails are waymarked from start to finish and have been graded for difficulty.

At the start of the trail there is an information panel – please read this before setting off.

Climachx Trail

  • Grade: Red/Difficult
  • Distance: 15 kilometres
  • Climb: 450 metres
  • Time: 1-2 hours

The Climachx Trail may be short, but it packs a punch bigger than its length would suggest.

The final descent, ‘Tony the Tiger’, is the highlight - natural feeling singletrack with technical rocky sections, drop offs, rock slabs and the scary left hander before the final switchback descent.

Dyfi Mountain Biking

The Climachx Trail is looked after and managed by Dyfi Mountain Biking, a local community group

Dyfi Mountain Biking is a community interest company formed by volunteers to continue to develop, promote and protect facilities for mountain biking in the Dyfi area.

For more information go to the Dyfi Mountain Biking website.

Dyfi Forest

Ceinws is within Dyfi Forest.

Situated between the towns of Machynlleth and Dolgellau, Dyfi Forest lies in the shadow of Cadair Idris.

The woodlands cling to the steep hillsides of the Tarren and Dyfi mountain ranges cut through by the Dysynni, Dulas and Dyfi rivers heading west to the nearby sea.

The whole area was once filled with thriving slate mines, employing hundreds of people.

The finished slate was moved to the coast via a system of tramways and steam trains for export.

The remaining trains now carry holidaymakers through the countryside.

Walking trails in Dyfi Forest

Try our waymarked walking trails for a taste of the area's history and culture and experience the cascading rivers and majestic trees.

There are walking trails in these Natural Resources Wales woodlands within Dyfi Forest:

Eryri (Snowdonia) National Park

Most of Dyfi Forest is in Eryri (Snowdonia) National Park.

Eryri s the largest National Park in Wales and is home to picturesque towns and villages and the highest mountain in Wales.

It is looked after by the Eryri National Park Authority.

For more information about visiting Eryri go to the Eryri National Park Authority website.

National Forest for Wales

Dyfi Forest forms part of the National Forest for Wales.

The National Forest will:

  • create areas of new woodland
  • enhance existing woodlands
  • restore Wales’ irreplaceable ancient woodlands

It will form a connected ecological network running throughout Wales, bringing social, economic and environmental benefits.

Parts of the network will eventually form a trail running the length and breadth of Wales, so anyone can access it wherever they live.

For more information go to the National Forest for Wales website.

Closures and diversions

Sometimes we need to close or divert trails for your safety whilst we undertake maintenance work or other operations.

We may have to close a site in extreme weather, such as high winds or snow and ice, due to the risk of injury to visitors or staff.

Please always follow any instructions on site and any temporary diversion signs.

How to get here 


Ceinws is 4½ miles north of Machynlleth.

It is in the county of Powys.

Ordnance Survey map

Ceinws is on Ordnance Survey (OS) Explorer map 215.

The OS grid reference for the parking area at the start of the Climachx Trail is SH 760 063.


Take the A487 from Machynlleth towards Dolgellau.

After approximately 4 miles turn right signposted towards Ceinws.

Cross the stone bridge and follow the road around to the right.

Follow the blue parking area signs to the car park.

Public transport

The nearest mainline railway station is in Machynlleth.

For details of public transport visit the Traveline Cymru website


Car parking is free of charge.

Overnight parking is not permitted.

Contact details

There are no staff at this location.

Contact our customer team for general enquiries during office hours, Monday to Friday.

Related document downloads

Climachx guide PDF [1.8 MB]

Other places in North West Wales

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