Trekking can be undertaken in any surroundings. People can trek on paved roads and dense wilderness alike. A trek can last anything from days to months, and it is definitely a challenge. Trekking is actually different from hiking. Trekking is a verb for “to travel or migrate, especially slowly or with difficulty”. Unlike hiking, trekking is done on a variety of terrains, not only in nature. A long trek may take you on roads, through high mountains and even unmarked terrain. You’ll often have to use your orientation skills with a compass and a map to find your way to your destination which can be tens or even hundreds of kilometres away. A long distance trek can take weeks to finish. During this kind of an expedition, trekkers sometimes hire people to carry their equipment, cook meals and set up their tents.
The backpacking approach of a light pack, stove, freeze-dried food and a tent may not be an appropriate way to trek. So much food is available in hill villages that it doesn't make much sense to try to be totally self-sufficient while trekking. This is throughout except in the high mountains above 4500 metres. Backpackers are quite similar to trekkers.
By arranging your food and accommodation locally, you can move at your own pace and set your own schedule. You can move faster or slower than others and make side trips not possible with a large group. You can spend a day photographing mountains, flowers or nature; or you can simply laze around through the day. Hotels provide a special meeting place for trekkers from throughout the world. You are free (within the limits imposed by your trekking permit) to alter your route and change your plans to visit other out-of-the-way places as you learn about them.
A third style of trekking is to gather Sherpa, porters, food and equipment and take off on a trek with all the comforts and facilities of an organised trek. On such a trek you camp in tents, porters carry your gear, Sherpas set up camp and cook and serve meals. You carry a backpack with only a water bottle, camera and jacket. Trekkers, who opt for this approach, particularly with a small group of friends, often have a rewarding, enriching and enjoyable trip