BEST FOR: Fast and neutral training, early adopters.
THE TEST: Newton seems to break all the rules and get away with it. These are the stiffest road shoes here, the priciest, and the most eccentric—a block of firm lugs protrude under the midfoot, which serves as a kind of propulsion lever. And yet they proved to be among the most responsive, speedy, and efficient shoes in our test. The firmness of those lugs does boost this shoe’s forward motion and energy return, although it might take some getting used to—for some that’s one run; others may never get over it.
THE VERDICT: If you like the feel of the lugs, you’ll love these low-profile shoes. 9.1 oz; 3 mm drop.