Hiking is an outdoor activity which consists of walking in natural
environments, often on hiking trails. It may be broadly grouped into
three categories:
Category one
Day hiking involves distances of less than a mile up to longer
distances that can be covered in a single day. For a day hike along an
easy trail little preparations are needed, and any moderately fit
person can enjoy them.
Category two
Long distance walking is multi-day hikes in non-wilderness areas or
with significant service, such as trails, lodges and restaurants,
possibly with transport for luggage. Long distance walking is a
tradition very much alive in Europe. There are many trails through the
countryside, often leading from one village to the next, and also to
towns on the way. Often they follow routes used before roads were
built. These and similar trails can be and are used also for day
hikes.
Category three
Wilderness backpacking involves a multi-day hiking expedition where
participants carry the required supplies for overnight stay and two or
more days of survival in the wilderness, and camp en route.
The categories overlap: many trails go through wilderness but have
service where you are supposed to spend your nights. Much of the advice
for wilderness applies between lodges or camping spots (or between the
endpoints of you long day hike), but not all. Much of the advice for
wilderness hikes may also apply where there is no wilderness at all, but
you are carrying all your equipment, making your own food and sleeping
outdoors.