The festival that encourages people to spend time outdoors and participate in various activities like hiking is the Earth Day celebration. This annual event promotes environmental awareness and sustainability, motivating communities to engage in activities such as tree planting, clean-up events, and education on conservation. Earth Day emphasizes the importance of appreciating nature and taking action to protect the environment. Communities often collaborate to host local events, encouraging people to enjoy outdoor activities and foster a sense of connection to the planet and their surroundings.