Hiking is a form of outdoor recreation in which participants traverse natural terrain, such as mountains, forests, or deserts, on foot or by foot. Cycling can be done for recreation, physical fitness, or transportation. 

Typically, hikers wear sturdy shoes or boots and carry a backpack containing water, food, and weather-appropriate clothing. 

Others enjoy the challenge of bushwhacking or venturing off the trail. Hiking can be done individually or in groups, and can range from short day hikes to multi-day backpacking excursions.