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The grade of a walk is an indicator of how difficult the terrain is that you will encounter along the way. This does not take into account the walk length but does suggest how challenging the walk will be. It takes into account things like hills, path surfaces and obstacles (like stiles, gates, steps and rock scrambles). An easy walk, graded as 1 (and shown as 1 Boot) indicates a walk that is essentially flat, has no sharp hills to climb, has no stiles, is easy to navigate (probably along a well-worn path) and is suitable for most levels of fitness. A difficult walk, graded as 5 (and represented by 5 Boots) indicates a walk that is strenuous and involves steep ascents and/or descents. It may be technically challenging involving difficult terrain or obstacles that require scrambling with your hands. Please note that the grading for walks is subjective and open to interpretation and should only be used as a guide when selecting a walk.
NOTE: Do be aware that the level of stamina required for any walk will vary depending on both the walk length and the difficulty grade - you should only walk within your limits.