A product called breeze and 6 inch heavy gauged steel edging might work. Perhaps weep edging. Just has holes drilled in it to help with drainage

Breeze is a pulverized flagstone that can be tamped down and forms a pretty hard surface when it is dry. Tracks when it is wet. Will have to dig out the path 4-6 inches deep and put landscape fabric under it.

Look up breeze walkway and you should be able to find examples