Running around Llyn Arenig-Fawr 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 Llyn Arenig-Fawr—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 6, 2025

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1. Arenig Fawr loop from Cefn Garw

9.93km

01:29

530m

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

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Expert

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2. Arenig Fawr South Ridge Top – Arenig Fawr South Top loop from Cefn Garw

15.3km

02:05

560m

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

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Expert

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3. Arenig Fawr South Ridge Top – Moel Llyfnant loop from Cefn Garw

18.2km

02:34

740m

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

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4. Running loop from Cefn Garw

11.9km

01:42

520m

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

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5. Llyn Tegid foreshore – Coed Cerrig-llwydion loop from Llangywer

10.6km

01:06

50m

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

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Intermediate

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The best running trails around Llyn Arenig-Fawr

1. Arenig Fawr loop from Cefn Garw

2. Arenig Fawr South Ridge Top – Arenig Fawr South Top loop from Cefn Garw

3. Arenig Fawr South Ridge Top – Moel Llyfnant loop from Cefn Garw

4. Running loop from Cefn Garw

5. Llyn Tegid foreshore – Coed Cerrig-llwydion loop from Llangywer

Most popular routes around Llyn Arenig-Fawr

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