The words "trekking" and "hiking" are used somewhat interchangeably, but a trek more often refers to a long distance walk along age-old trails, usually in remote areas far from roads or highways. And how many miles do we walk each day? We usually characterize the hiking day in terms of hours. On most treks, we hike from four to six hours a day (with an occasional eight hour day). On most trips, porters, pack animals or vehicles carry all the gear. All you need to carry is a small daypack to hold a water bottle, camera and sweater/jacket.