The Newton Gravity IV is built for high mileage runners who crave speed and efficiency. Newton’s patented dynamic movement system uses five lugs which compress under the weight of the runner and then rebound upon release creating a POP effect. The aggressive rebound of the Newton Gravity IV creates a fast, smooth ride for runners. It’s a great choice for uptempo running and racing.
The fourth version of the popular Newton Gravity has a distinct new look. A fifth lug has been added, creating a wider surface area and improved stability. Having run in both styles, I really like the change. The fifth lug definitely makes things feel more secure. I never had an accident while running in shoes with four lugs, but it always felt a little tippy to me. The rest of the outsole is made from super high abrasion rubber compound (s.h.a.r.c.) to stand up to high mileage on paved surfaces.
The Newton Gravity IV upper is super lightweight, breathable, and provides 360° of reflective material to keep you safe on the roads. The semi-flat laces hold well, there is an extra heel lace lock, and the seams are flat and comfortable. The tongue is thin, but didn’t disappear into my shoe. The Newton Gravity IV comes in a blue, yellow, red combination for men and a orange, yellow, purple combination for women.
Road Test of the Newton Gravity IV
Wobble Gobble 4-Miler
My first test of the Newton Gravity IV was the Wobble Gobble 4-Miler on Thanksgiving morning. After cruising through the first mile in 5:48, these shoes earned a place close to my heart. I crossed the line in 24:02 averaging 6:01 miles overall, but that was far better than I expected. (And, truth be known, my GPS watch showed the course distance to be closer to 3.8 miles.)
The shoes felt springy and light. I launched myself up the hills, and really took advantage of the lugs to by running with an aggressive forward leaning stance. I have yet to run for more than an hour in these shoes, but so far I’m very happy with the feel and responsiveness of the Newton Gravity IV. The proof is in the race photo.
One of the things I noticed most when running in Newtons, is the effect it has on my lower calves. The conventional heel wedge is missing and, as a result, the calves may feel a bit overextended. It’s not a bad thing, it’s just a new thing. To avoid placing too much stress on weak calves, tendons and fascia, Newton suggests rotating your new shoes in with your current shoes until your body adapts.
These shoes were sent for review.