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 Moderately demanding: devoid of serious hazard in good conditions, but requiring map-reading and compass skills; mainly, but not always, on clear paths

 Demanding: similar to ‘strenuous’, but usually shorter or with less height gain, but still rugged, remote and energetic walks

 Strenuous: lengthy, over rough and/or high ground, sometimes in remote locations; there may be long, rugged and/or trackless sections

These grades are no better than a diagrammatic map, not least because almost all the walks in this book contain some stretches that meet each grade criteria; it is possible, indeed likely, that all four grades will be met with on each walk. The grades are therefore no more than a general overview of each entire walk. Within the book the more difficult grades predominate – there are 14 ‘strenuous’ walks, 17 ‘demanding’, 14 ‘moderately demanding’, and 5 ‘moderate’.

Distances and height gain

This information has been arrived at by a combination of methods, none of which assumes that if the highest point is 500m, and the lowest is 200m, that the amount of height gain is 300m; there are just too many variables to make it that simple. So, precision is not always possible.