Hiking
With plenty of space, a good network of paths, and a legal right to roam around much of the country, hiking in Scotland is a major draw.
It doesn't matter if you're looking for gentle ambles around the glens (valleys); the rewards of a long-distance footpath; or challenging summits: they're all plentiful and easily found.
This app focuses mainly on the tamer options – particularly those that can be combined with a bit of sightseeing and are accessible to most.
Athletic types looking for real challenges should pick up the six district guides by the Scottish Mountaineering Club, or plan a trip along one of Scotland's long distance footpaths; the West Highland Way is the most popular, but there are many other (and quieter) alternatives, as this interactive map shows.