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Merthyr Tydfil

Merthyr Tydfil

The best running trails around Merthyr Tydfil

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Running around Merthyr Tydfil is one of the best ways to explore more of this region. To help you discover the most beautiful places to run, we’ve reviewed our full collection of routes around Merthyr Tydfil—and are proud to present the best running trails. Click on any of the routes for more details and browse real tips and photos uploaded by other runners.

Last updated: October 24, 2025

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1. Garwnant Forest and Lake loop from Llwyn-onn

5.48km

00:36

40m

Intermediate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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2. Pen y Fan – Fan y Big loop from Merthyr Tydfil

53.2km

06:26

1,360m

Expert run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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3. Hengoed Viaduct – Wheel o Drams Sculpture loop from Quakers Yard

12.2km

01:16

60m

Intermediate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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4. Running loop from Penybryn

5.42km

00:34

50m

Intermediate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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5. Pontsticill Reservoir loop from Gellideg

22.8km

02:32

370m

Expert run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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6. Pontsarn Viaduct – Cwm Taf Fechan loop from Pant

15.6km

01:43

210m

Expert run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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7. Running loop from Merthyr Tydfil

7.14km

00:44

40m

Intermediate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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8. Pontsticill Reservoir loop from Pontsticill

17.8km

02:01

330m

Expert run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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9. Pontsticill Reservoir loop from Cefn-coed-y-cymmer

15.9km

01:44

220m

Expert run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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10. Garwnant Forest and Lake – Garwnant Reservoir and Dam loop from Llwyn-onn

15.6km

01:45

260m

Expert run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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The best running trails around Merthyr Tydfil

1. Garwnant Forest and Lake loop from Llwyn-onn

2. Pen y Fan – Fan y Big loop from Merthyr Tydfil

3. Hengoed Viaduct – Wheel o Drams Sculpture loop from Quakers Yard

4. Running loop from Penybryn

5. Pontsticill Reservoir loop from Gellideg

6. Pontsarn Viaduct – Cwm Taf Fechan loop from Pant

7. Running loop from Merthyr Tydfil

8. Pontsticill Reservoir loop from Pontsticill

9. Pontsticill Reservoir loop from Cefn-coed-y-cymmer

10. Garwnant Forest and Lake – Garwnant Reservoir and Dam loop from Llwyn-onn

Other adventures around Merthyr Tydfil

Most popular routes around Merthyr Tydfil

Most popular attractions around Merthyr Tydfil

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