Every trail offers a fresh adventure, whether you meander along a river, through a forest, or into a valley. With these 10 treks from around the globe, you'll take in views of gorgeous landscapes, challenge your abilities, and see a new part of the world—all in just a day. So find your route, push your muscles, lungs, and determination to new heights, then sit back and revel in your accomplishments.
This story is based on excerpted text from the National Geographic book Ultimate Journeys for Two. It has been edited and condensed for clarity.