Inny Valleys circular walk from Altarnun

Inny Valleys from Altarnun

A circular walk around the valleys of the River Inny and Penpont Water to the mediaeval church at Laneast and the old bridge at Gimlett's Mill from the 15th century "Cathedral of the Moors" in Altarnun, set beside a 6th Century Celtic cross where churches and chapels had been throughout the Dark Ages.

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The app guides you around the walk using GPS, removing any worries about getting lost.
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The walk route is described with detailed, regularly-updated, hand-written directions.
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Each time there is a new direction to follow, the app will beep to remind you, and will warn you if you go off-route.
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A map shows the route, where you are at all times and even which way you are facing.
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Each walk is packed with information about the history and nature along the route, from over a decade of research than spans more than 3,000 topics.
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Once a walk is downloaded, the app doesn't need wifi or a phone signal during the walk.
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The app counts down distance to the next direction and estimates time remaining based on your personal walking speed.
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We keep the directions continually updated for changes to the paths/landmarks - the price for a walk includes ongoing free updates.

either as a GPS-guided walk with our app (£3.29) or a PDF of directions (£2.79) Example of directions

Starting from the church at Altarnun, the walk crosses the river valleys of the Inny and Penpont Water, with some nice views of Bodmin Moor. In spring and summer, there are spectacular wildflowers all the way around the route. The gradients are relatively gentle, but there are some steep and awkward stiles which is why it is graded at moderate-strenuous.


  • Pretty village of Altarnun
  • Spectacular St Nonna's church known as "cathedral of the moors"
  • Pleasant winding country lanes and footpaths with wild flowers in spring and summer
  • Woodland rich in orchids and other woodland wildflowers around the river crossing at Laneast
  • Ancient church and Celtic cross at Laneast
  • Tranquil setting of Gimbletts Mill and Bridge


  • Some of the stiles on the route are pretty athletically-demanding (stone footholds over walls etc) both in terms of balance and effort. The route is graded moderate solely on its steepness. The stiles may make it more strenuous for the less gymnastically-inclined.
  • If you have secateurs, take these along to trim any brambles from stiles.

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Vital statistics

  • OS Explorer: 109
  • Distance: 6.6 miles/10.6 km
  • Steepness grade: Moderate
  • Recommended footwear: walking boots

OS maps for this walk

Click or tap on map for more info (blue=laminated)

either as a GPS-guided walk with our app (£3.29) or a PDF of directions (£2.79) Example of directions

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