We spent 6.6 hours reading reviews from experts and users. In summary, this is what runners think:

6 reasons to buy

  • A few runners mentioned that the Newton Gravity 8 has a roomy toe box.
  • The shoe has improved on the support it provides to the foot, according to a reviewer.
  • Several purchasers agreed that the eighth Newton Gravity is lightweight.
  • The midsole of the Gravity 8 is smooth and responsive, wrote a tester.
  • A number of wearers commented that the shoe is lightweight.
  • One user stated that the Newton Gravity 8 had the perfect fit.

1 reasons not to buy

  • Many were disappointed with the Gravity 8’s lack of color options.

Bottom line

Many users praised the Gravity 8 and claimed they were satisfied with its updates; the shoe has definitely improved from its previous versions according to constant users of the series. With the shoe’s reliable support, lightweight structure, and efficient performance, both old and new customers have been impressed and said they would repurchase the Newton Gravity.


Expert Reviews

96 / 100 based on 1 expert reviews

  • 96 / 100 | Runner's World | | Level 4 expert

    The Gravity 8 is a low-drop, neutral road shoe that offers a firm, responsive ride with noticeably more energy return.

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  • In the eighth version of the Gravity series, Newton offers a running shoe that is lighter and more nimble than the previous one. The Gravity 8 is built with a springy midsole and a snappy forefoot design that enables a fast and responsive ride for neutral pronators.
  • The upper introduces the new Adaptive Fit Mesh, a seamless engineered material that provides optimum breathability. A few structural components have been updated as well: The metatarsal stretch panel that was present in the Gravity 7 has been replaced with seamless construction for a more comfortable fit.
  • Meanwhile, the rest of the shoe remains similar to the previous version. The midsole still features the proprietary Action/Reaction technology and the outsole has the super high-abrasion rubber compound (SHARC).

The Newton Gravity 8 is designed to fit true to size; thus, runners can wear their usual size preferences without problems. Although the forefoot is roomy enough for an adequate toe splay, the heel area is slightly narrow to promote a tight, secure fit. The Gravity 8 comes in Medium width for both the men’s and women’s versions.

The outsole of the Newton Gravity 8 is comprised of two types of rubber. The forefoot is made up of a high-density rubber that offers durability, which is essential for consistent quality of toe-offs. The durable build of the high-density rubber enables a long-lasting performance for the runner.

Meanwhile, the rearfoot area is comprised of Newton’s own outsole material called the SHARC, short for “super high-abrasion rubber compound.” The SHARC material gives the outsole of the Gravity 8 enhanced traction, allowing for a problem-free run in both wet and dry conditions. The SHARC outsole, because of its abrasion-resistant quality, also heightens the durability of the outsole of the Gravity 8.

The P.O.P.1 (Point of Power) platform houses the lugs that come in an air-filled chamber. The lugs compress on footstrike and expand on toe-off, thus employing the Action/Reaction technique, which is further explained in the Midsole section.

The tread pattern and overall outsole design of the Gravity 8 do not differ much from that of its predecessor, a package that includes tactical flex grooves that mirror foot motion.

The main midsole component of the Newton Gravity 8 is the Newtonium foam, a cushioning system that provides the necessary comfort and responsiveness for the optimal running experience. The Newtonium foam employs a full-foot cushioning, which means that the benefits received by the forefoot are also the same in the heel area. This design ensures uniform coverage and protection throughout the foot. In comparison, the midsole material utilized in the Nike Epic React Flyknit 2 is lightweight, resilient, and durable all at the same time.

Adding to the features of the Newtonium foam is the Action/Reaction Technology, which is activated by the lugs in the P.O.P.1 platform in the outsole of the Gravity 8. The Action/Reaction Technology affects the run by creating a responsive midsole that is similar to the workings of a trampoline. The result is more bounce but with less energy loss compared to the traditional foam of other running shoes.

A biomechanical sensor plate covers the metatarsals for improved proprioception. This means the runner is more aware of their position and body movements, resulting in increased and more flexible mobility of the foot.

The new Adaptive Fit Mesh of the Newton Gravity 8 works by molding to the contours of the foot, ensuring a snug, customized fit, and improved running experience. The seamless structure provided by the Adaptive Fit Mesh creates a soft and breathable chamber for the foot.

Assisting the Adaptive Fit Mesh is the anatomically-designed skeletal tongue, the build of which wraps around the foot for an even more streamlined fit.

The Gravity 8 features an advanced lacing system that involves the use of semi-flat laces, which guarantee a versatile fit that is consistent throughout the running activity. It is aided by the pre-molded heel counter for additional support in the rearfoot area.

Lastly, the reflective details all around the shoe give the Newton Gravity 8 a 360-degree visibility, so that runners can still do their activities even in low-light conditions.

Jens Jakob Andersen
Jens Jakob Andersen

Jens Jakob is a fan of short distances with a 5K PR at 15:58 minutes. Based on 35 million race results, he's among the fastest 0.2% runners. Jens Jakob previously owned a running store, when he was also a competitive runner. His work is regularly featured in The New York Times, Washington Post, BBC and the likes as well as peer-reviewed journals. Finally, he has been a guest on +30 podcasts on running.