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Dolbadarn Castle – Dinorwig Slate Mine Ruins loop from Glynrhonwy Slate Quarry

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Running trails & routes

Dolbadarn Castle – Dinorwig Slate Mine Ruins loop from Glynrhonwy Slate Quarry

Hard

runners

Dolbadarn Castle – Dinorwig Slate Mine Ruins loop from Glynrhonwy Slate Quarry

02:02

15.8km

540m

Running

Hard run. Very good fitness required. Mostly accessible paths. Some sure footedness required.

Last updated: May 9, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Parc Cenedlaethol Eryri

Waypoints

Start point

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4.60 km

Llanberis Path to Snowdon Summit

Highlight • Trail

Get to Llanberis early because the path is very popular.

Tip by

5.62 km

Coed Victoria

Forest

6.39 km

Dolbadarn Castle

Highlight • Historical Site

Great little castle/watchtower, easy walk up to it from the hotel nearby, the views from it on a good day are worth the short walk.

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7.17 km

Dinorwig Slate Mine Ruins

Highlight (Segment) • Natural Monument

Dinorwig Slate Mine was the second largest slate quarry in the world. There's a lot to discover here. Old buildings, some crumbling, remains of machines and a lot of slate ...

Translated by Google •

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9.36 km

View of Llyn Padarn and the village of Llanberis

Highlight • Viewpoint

Great views over Llyn Padarn and of Yr Wyddfa (Snowdon) and other summits

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9.84 km

View of Llyn Padarn from the Old Quarry Hospital

Highlight • Viewpoint

Great lake in llanberis that is just the right length for an evening stroll, some fantastic views from the north side over the lake, and if you go through the …

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11.1 km

Llanberis Lake Railway

Highlight • Structure

Not been on this myself but on a conversation with a member of the public I'm told it's a wonderful journey around to the north side of the lake away from the hustle and bustle of the South side

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15.8 km

End point

Way Types & Surfaces

Way Types

9.18 km

3.40 km

1.52 km

1.05 km

406 m

226 m

< 100 m

Surfaces

4.13 km

3.81 km

2.83 km

2.59 km

1.99 km

451 m

Elevation

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

Highest point (370 m)

Lowest point (100 m)

Weather

Saturday 30 May

16°C

11°C

33 %

Additional weather tips

Max wind speed: 19.0 km/h

to get more detailed weather forecasts along your route

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

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Dolbadarn Castle – Dinorwig Slate Mine Ruins loop from Glynrhonwy Slate Quarry

Llanberis Path to Snowdon Summit

Dolbadarn Castle

Dinorwig Slate Mine Ruins

View of Llyn Padarn and the village of Llanberis

View of Llyn Padarn from the Old Quarry Hospital

Llanberis Lake Railway

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