A trail is a path or track that is often used for walking, hiking, or biking. Trails can be found in various environments, such as forests, mountains, and parks. They are typically marked to guide users and can vary in difficulty, length, and surface type. Some trails are designed for specific activities, like mountain biking or horseback riding, while others are meant for general foot traffic. Trails can also serve as important routes for wildlife and can connect different ecosystems. Many trails are part of larger systems, such as national parks or nature reserves, promoting outdoor recreation and conservation. They provide opportunities for people to enjoy nature and engage in physical activity.