The clerk who helped me said that as long as I stay in the eastern half of the United States and don't carry more than 15 pounds, I could get away with what he called trail runners. Trail runners look exactly like running shoes, so I passed on them. If I'm finally going to spring for a pair of hiking boots, I reasoned, I want them to resemble the real article at least slightly, meaning bulky, brown and many-laced.
The ones I finally settled on (and I mean finally — I tried on six pairs) look sturdier than tennis shoes but less daunting than I originally imagined. The difference lies in the gait they enforce. One is not fleet of foot in a pair of hiking boots; one plods. But plodding isn't so bad, I've discovered.