As an Alternative if looking for a long walk taking most of the day with a picnic lunch, we recommend The Cairnwell 3 Munros.
Hard Munro walk.
Three Munros; Carn Aosda, Carn a'Gheoidh, The Cairnwell.
Around 13km ( 6 hours).
Steep terrain and not a path the whole way- map reading skills recommended.