The Athletic Sneakers That Experienced Runners Swear By

"I've been running in the Saucony Endorphin Speed 2 ($160) for the last six months, which I bought because pro runner and Olympian Molly Seidel has worn them in the past, and I'm forever inspired by her story," POPSUGAR Fashion Senior Editor Sarah Wasilak says. "I like them best for road running and racking up the miles, though they're great on the tread for a quick HIIT or interval training, too."