Explore the great outdoors with these apps

[MUSIC] Your smartphone is the perfect gadget to consult to discover new hiking trails. Download the free AllTrails app onto your iPhone or Android and search its database of over 50,000 trails to find exactly what you're looking for. The app lets you read reviews posted by other users, keep a journal of your hikes, and share routes and photos through social media. If your hiking boots are taking you to one of the national parks this summer, check out the Chimani system of apps. The general app is free for both types of phones and is great for basic park information. If you already know that you're traveling to, say, Glacier National Park, download that specific free app for trail information, ranger talk schedules, and safety tips. Any avid hiker wants to keep track of mileage and elevation game. Mapmyhike is the perfect free app to help you do that. After you hike, log your route, see how far your two feet traveled. The app also has route suggestions and easy ways to share the record of your hikes with friends. In San Francisco, I'm [UNKNOWN], cnet.com, for CBS news. [MUSIC]