Looking for a vacation that involves trails, getting dirty, and giving back? The American Hiking Society offers 75 trail stewardship projects in 25 states—and the U.S. Virgin Islands—now through November. Join a crew of 6-15 volunteers for a week of building and maintaining trails in locations like the Boundary Waters Canoe Area, Golden Gate National Recreation Area, Mammoth Cave National Park, and the Mt. Whitney Trail.

Trips range from the very strenuous (such as backpacking into the Bob Marshall Wilderness) to more moderate day hiking with base or cabin camping. Volunteer vacations cost $245 for AHS members and $275 for non-members, with each additional trip per calendar year $175. Get more information or download a PDF with trip descriptions and application from the American Hiking Society.