The term ONE ON A TRAIL can be summarized as a HIKER, which is a five-letter word. A HIKER is someone who goes on long walks or hikes in nature, often for recreational purposes. They may also be referred to as trekkers or backpackers. Hikers typically carry supplies such as food, water, and camping gear with them on their journey. Hiking is a popular activity among outdoor enthusiasts, as it allows them to explore nature and take in the sights and sounds of the wilderness.