See our article "Set In Stone" about different types of gravel and its growing popularity.
Thank you to Michael Donnellan of Summerhill Landscapes in Sag Harbor, N.Y., for his help in developing these instructions
 Mark out the path's outer boundaries using string or a garden hose, taking time to find the most pleasing curves and angles. Walking paths should be 24 to 36 inches wide, and preferably on level ground. Excavate soil to eight inches below the final surface.
For gravel alternatives, see this comprehensive information about using stamped concrete.