Picture this: You bought your dream pair of shoes, spent a couple hours exploring a new city or running errands on foot and realized one thing. You need to figure out how to make your shoes more ...

“As someone who has climbed mountains, I’ve had to improve the grip on the bottom of a shoe or two,” Michael Sawyer of UltimateKilimanjaro.com says with a laugh. “Just take a rock, nail file or ...