Easy: 1
Accessible to all people in good health.
Moderate: 2
Accessible to all those in good health, who are doing some sport regularly, and who are used to all-terrain walks. 4-6 hours walk per day, without much carrying.
Challenging: 3
Suites those that are physically active and have some background in basic traveling in mountainous terrain with a backpack. 6-7 hrs walks per day.
Demanding: 4
Demanding some effort and certain endurance. Good health and some hiking experience is required. 6-8 hours walk per day. Often involves carrying your own gear.
Strenuous: 5
Only suitable for people physically and psychologically prepared for highly engaging experience. Expedition level. Often involves carrying your own gear.