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Garmin sell LandRanger Topo or something maps
https://www.walkhighlands.co.uk/Forum/viewtopic.php?t=41600
With some poking OSM looks like it might provide something like what you want:
https://wiki.openstreetmap.org/wiki/Hiking_Map#Map_examples -
I've found OSM-based http://www.openfietsmap.nl maps good enough for everything. Free and Garmin-ready. Show footpaths, stiles, gates etc.
You don't say you need it, but I never have any success routing on the device.
Edit: Not sure if contours are included... have a feeling for the UK I needed a separate contour map from somewhere else, whereas for the Alps it was already included.
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you need some maps from TalkyToaster
So I'm slowly figuring out the whole gps thing and I've mastered the basics on my Etrex 30 in that I have downloaded an open street maps UK map and I know how to create a track on ridewithgps and use it to navigate on roads.
I also want to be able to use it for hiking and offroad cycling with more detailed map information. I can't find these maps open sourced as easily - Is the easiest option to subscribe to birdseye, or is there another option?