This question has options. How would someone go about accomplishing this goal?
Make a nice path in the back yard.

Available options:
(a). Dig a pathway so that there's room for river rocks. pour the rocks in and set some large patio stepping stones every half foot so that you have structure. Plant flowers along the sides.
(b). Run over the area you want for the path. Invite your friends to come walk or run it with you. Also invite a lot of children to come and walk that area too. It will soon become a nice path.
(a).