OS Maps

These days you may access maps on your phone, using the OS app or another dedicated mapping app, such as MemoryMap. These are great for pinpointing exactly where you are at any time, and the zooming in facility on the screen saves getting out the glasses!

However, if you want the relevant OS paper map for Trefriw and the area covered in our walks, the one you need is Explorer (OL) 17  (1:25,000 scale).

(Statistically you’re likely to have a copy already – this is the Ordnance Survey’s top-selling map!)

OS map

On one side is the Conwy Valley, with Trefriw sitting fairly centrally in it; all our walks lie on this side of the map.  The other side is dominated by the Snowdon massif.

OS map large

If the 1:50,000 is what you want, we’re on the very edge of Landranger 115.

os map Landranger 115       os map Landranger large

If you’re interested in a free web resource for planning walks on Ordnance Survey maps, why not try Visorando? It provides key information such as distance and elevation, and you can also print out the walk and download a GPX file for use with GPS devices, if desired.

The Ordnance Survey also offer a walk planner (https://osmaps.ordnancesurvey.co.uk), but you have to be a subscriber to use the 1:25,000 mapping, which also has a ‘snap to’ feature on paths in Snowdonia National Park.


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A choice of 22 walks! Something for everyone!