Unlock this article and bundle up with Outside+. Already have an Outside Account? Sign in 40% Off Holiday Sale, Ends Nov. 28 $4.99 $2.99 / month* Get the one subscription to fuel all your adventures. Map your next adventure with our premium GPS apps: Gaia GPS Premium and Trailforks Pro. Read unlimited digital content from 15+ brands, including Outside Magazine, Triathlete, Ski, Trail Runner, and VeloNews. Watch 600+ hours of endurance challenges, cycling and skiing action, and travel documentaries. Learn from the pros with expert-led online courses. Join Outside+ *Outside memberships are billed annually. You may cancel your membership at anytime, but no refunds will be issued for payments already made. Upon cancellation, you will have access to your membership through the end of your paid year. More Details Backpacker Videos Video loading... Basecamp OnDemand How to Use Waypoints on a GPS Share this Facebook Icon Twitter Icon Email Icon Join Backpacker Create a personalized feed and bookmark your favorites. Join for free Already have an account? Sign In Join Backpacker Create a personalized feed and bookmark your favorites. Join for free Already have an account? Sign In Polar explorer and expedition guide Eric Larsen discusses how to use waypoints to efficiently navigate in the backcountry.