Routes

Planner

Features

Updates

App

Get the App

Routes

Running trails & routes

Corn Du – Pen y Fan loop from Merthyr Tydfil

Routes

Running trails & routes

Corn Du – Pen y Fan loop from Merthyr Tydfil

Hard

runners

Corn Du – Pen y Fan loop from Merthyr Tydfil

06:20

52.7km

1,270m

Running

Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: May 13, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Bannau Brycheiniog National Park

Cwm Taf Fechan Woodlands Site of Special Scientific Interest

Waypoints

Start point

Train Station

Get Directions

24.0 km

View of Bannau Brycheiniog from the Summit Cairn

Highlight • Summit

this is a good spot for a breather and to take in the incredible views

Tip by

24.3 km

Corn Du

Highlight • Natural Monument

From the 2,864 feet (873 m) summit of Corn Du, you get spectacular views of Llyn Cwm Llwch directly below and over Wales stretching out below. The trail to this …

Tip by

24.3 km

Col between Corn Du and Pen y Fan

Highlight (Segment) • Mountain Pass

This easy col between Pen Y Fan and Corn Du is a gorgeous easy hill section no more than a few hundred metres long with minimal height gain and loss. …

Tip by

25.0 km

Welsh Mountain Ponies in Bannau Brycheiniog National Park

Highlight • Viewpoint

These Welsh mountain ponies roam freely across the Brecons Beacons and can often be found around the summit of Pen y Fan.

Tip by

25.0 km

Pen y Fan

Highlight • Summit

Chief of the Brecon Beacons and the highest summit in south Wales, Pen y Fan is a hugely popular peak with routes to the top to suit everyone from first …

Tip by

26.4 km

Cribyn Summit

Highlight • Natural Monument

At 2,608 feet (795 m), the summit of Cribyn boasts awe-inspiring views over Pen-y-Fan, looking towards the steep cliff that forms its eastern flank. When the weather is clear, views …

Tip by

27.8 km

The Gap Pass (Bwlch ar y Fan), Brecon Beacons National Park

Highlight (Segment) • Viewpoint

Be aware that the surface of this section is really rather tough terrain, and large sections are unrideable with anything short of a full suspension MTB. I attempted this on …

Tip by

32.5 km

Taf Fechan Forest

Highlight • Trail

Taf Fechan Forest's extensive reach covers the valley floor to the south of the Central Beacons massif in the Bannau Brycheiniog (Brecon Beacons) National Park. It is named after the …

Tip by

47.6 km

Cwm Taf Fechan Nature Reserve

Nature Reserve

52.7 km

End point

Train Station

Way Types & Surfaces

Way Types

24.8 km

14.0 km

5.21 km

5.15 km

1.69 km

1.62 km

122 m

< 100 m

Surfaces

17.8 km

13.5 km

7.33 km

6.35 km

4.86 km

2.74 km

Elevation

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

Highest point (860 m)

Lowest point (170 m)

Weather

Saturday 4 July

24°C

13°C

-- %

Additional weather tips

Max wind speed: -- km/h

to get more detailed weather forecasts along your route

Comments

Want to know more?

Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

Navigate

Send to Phone

Save

Edit route

Download GPX

Move start point

Embed on a website

Report an Issue

Report restricted access

Nearby routes

Hard

5.0

404

Brecon Beacons Horseshoe Ridge Trail

02:38h

21.2km

740m

Hard

5.0

383

Brecon Beacons Horseshoe Ridge Trail

02:32h

20.1km

740m

Hard

5.0

299

Brecon Beacons Horseshoe Ridge Trail

02:33h

17.7km

1,000m

Hard

5.0

149

Talybont-on-Usk Reservoir loop along the Taff Trail — Brecon Beacons National Park

02:39h

24.0km

560m

Hard

5.0

124

Waun Fach horse shoe from Llanbedr

03:23h

27.0km

870m

Hard

106

Fan Hir Ridge, Fan Brycheiniog & Lyn y Fan Fach loop from Tafarn y Garreg

02:48h

20.0km

830m

Hard

Fan y Big Horseshoe Race Skyline loop

02:15h

19.1km

630m

Moderate

The Skirrid Trail

00:48h

5.96km

280m

Hard

Crug Hywel (Table Mountain) loop from Crickhowell — Bannau Brycheiniog (Brecon Beacons) National Park

00:59h

7.59km

360m

Moderate

Sugar Loaf loop from Llanwenarth car park — Bannau Brycheiniog (Brecon Beacons) National Park

00:46h

5.16km

220m

Hard

5.0

Sugar Loaf loop from Abergavenny — Bannau Brycheiniog (Brecon Beacons) National Park

01:59h

15.6km

520m

Hard

Corn Du & Pen y Fan loop from Nant Gwdi — Bannau Brycheiniog (Brecon Beacons) National Park

02:04h

15.2km

760m

Corn Du – Pen y Fan loop from Merthyr Tydfil

View of Bannau Brycheiniog from the Summit Cairn

Corn Du

Col between Corn Du and Pen y Fan

Welsh Mountain Ponies in Bannau Brycheiniog National Park

Pen y Fan

Cribyn Summit

The Gap Pass (Bwlch ar y Fan), Brecon Beacons National Park

Taf Fechan Forest

Nearby routes

Sign up or log in to keep exploring this route

We value your privacy ⛰️

We value your privacy ⛰️