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Cathedral Cave from Elterwater

You run straight into Cathedral Cave, a vast slate chamber with a pillar of rock holding up the roof and a shaft of daylight coming through. It is one of the strangest, best places to stop mid-run in the Lakes.

MODERATE

Effort: Moderate distance, manageable climb

Underfoot: Some uneven or off-path ground

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Distance
11.2km
Ascent
214m
Descent
214m
High point
169m
Est. time
1h 25m – 1h 55m
Route type
Loop
Runability98%

Runnable start to finish — nothing here forces you to walk.

In short

A 11.2km loop from Elterwater through Little Langdale, taking in the Cathedral Cave slate quarry, Slater Bridge and the River Brathay. Around 320m of climbing on mixed woodland and valley paths.

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You run straight into Cathedral Cave, a vast slate chamber with a pillar of rock holding up the roof and a shaft of daylight coming through. It is one of the strangest, best places to stop mid-run in the Lakes.

The route

Start at Elterwater and head into Little Langdale, following woodland and valley paths for 11.2km with around 320m of climbing. The loop links the shore of Elter Water, the River Brathay, and the old quarry ground above Little Langdale, before returning through Skelwith. It is a low, sheltered route by Lakeland standards, which makes it a strong choice when the fells are wild.

Cathedral Cave

The highlight sits in the Cathedral Quarries above Little Langdale. Cathedral Cave is a huge worked chamber in the green slate, with a single pillar left to hold the roof and a natural window of daylight breaking through the dark. It is a short detour off the main line and well worth the stop. Nearby, the 17th-century Slater Bridge, a slim packhorse crossing of the Brathay, is one of the most photographed spots in the valley.

Why it works

This is a route about texture rather than height: waterfalls, woodland, slate history and river crossings, all within a compact loop. The ground is mostly good path with some rocky, uneven quarry sections and tree roots underfoot, so it is not fast, but it is endlessly interesting. It suits an easy day, a run with company, or a first taste of Langdale that does not commit you to the high fells. Navigation is straightforward on clear paths, though the quarry area needs care: the caves are unlit, the ground is uneven, and the drops are real. Take a torch if you want to explore inside, keep to firm footing, and treat the wet slate as the slick surface it is. Elterwater village, with the Britannia Inn, waits at the finish. It is a strong choice with kids or less experienced runners, since the distance is short and the interest never lets up.

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Watch out for

The Cathedral Quarry chambers are unlit with uneven floors and unfenced drops, so take care and a torch if you go inside. Wet slate and river-crossing rocks are slippery, and the woodland paths hold roots and mud.

Safety on this route

999 / 112
Ask for Police → Mountain Rescue
Grid ref
NY328048
  • No signal? Text 999 — pre-register first: text register to 999
  • Tell someone your route and expected return time before you head out

Leave No Trace

  • Leave nothing but footprints, take nothing but memories.
  • Please respect the countryside and all its inhabitants.
  • Dogs on leads near livestock, and around ground-nesting birds from March to July.
  • Gates as you find them — open or closed, leave it that way for the farmer and the next runner.
  • Take it all home — wrappers, peel, tissue, the lot. It doesn't count as biodegradable if you can still see it.
  • Stick to the path where the ground either side is wet, planted, or nesting habitat.

Full Countryside Code & Leave No Trace guide →

Common questions

Most runners complete Cathedral Cave from Elterwater in 1 hour 25 minutes to 1 hour 55 minutes, depending on pace and conditions.

Run by us· last checked July 2026

Jason Millward has run this route and written it up from the ground. How we check routes

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About the author

JM

Jason Millward

Every route page says how that route was checked, and when.

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Runner reports

Nobody's logged a run here yet. If you get out on it, a few lines about how it went helps the next person plan their day.

Kit for this route

Salomon ADV Hydra Vest 4

Salomon ADV Hydra Vest 4

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Mountain Fuel Sports Jelly Hydrogel Energy Gel

Mountain Fuel Sports Jelly Hydrogel Energy Gel

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Garmin Forerunner 55 Running Watch

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Races on this ground

All Lake District races

Races starting within 20 km of the Cathedral Cave from Elterwater start, nearest first. If you are entered for one, this route is the rehearsal.