Easy:
Holidays/weekends are the easiest treks in the
Himalayas and involved walking up and down the hills
or the reasonable level of earth surface. All short
treks of about 4-6 days are included in this
category.
Moderate:
Treks in this category are designed for 7-15 days
that rely upon the trekkers' needs as well. These
treks take you up to an elevation of 3000 m above
sea level, though some demands 15 days more above
5000 m high.
High Altitude:
All longer treks exceeding 15 days duration are
in this category. These treks include high passes
above 5000 m taking you to high mountains/deserts.
So, the treks in this category are a real challenge
and provide you with an opportunity to observe old
life-style, culture, and tradition of the people
living in these places.