While trekking in Nepal, you will have multiple options to choose from. These treks range from easy, moderate, difficult to the strenuous difficulty level. So, it depends on which trek you want. However, each trek requires at least 5-6 hours of walking, on average, every day. Generally, trails will be gentle at lower altitudes and become steeper as you gain altitude. However, as these trails pass through the beautiful green hills of the country, they are bound to have ups and downs.