DiscontinuedUpdate: Altra Instinct 4.5
Neutral / cushion / high arch
Shoes for runners who do not need any additional arch support (Around 50% of runners). Best for people with normal, high or medium high arches. See the best neutral shoes.
Stability / overpronation / normal arch
Shoes for runners who need mild to moderate arch support (Around 45% of runners). Best for runners with a low arch. See the best stability shoes.
Motion control / severe overpronation / flat feet
Shoes for runners who needs a lot of arch support. Best for runners with flat feet. See the best motion control shoes.
Good to know
Cushioned shoes for your daily easy running. Great comfort. See best shoes for daily running.
Lightweight shoes good for races, interval training, tempo runs and fartlek. Here are the best competition running shoes.
Good to know
If you want just one pair of shoes, buy a shoe for daily running.
Heel to toe dropMen: 0mm
The height difference from the heel to the forefoot, also known as heel drop, toe spring, heel to toe spring or simply drop.
There are many opinions about what a good heel drop is. We do not recommend any in particular. Lean more in this video.
Heel heightMen: 25mm
Forefoot heightMen: 25mm
WidthMen: NormalWomen: Normal
Release dateJan 2017
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82 / 100 based on 8 expert reviews
I rated the Instinct 4 as "Worth Considering", as it's a good choice, but there are a number of shoes that are better.
Performance benefits of the Instinct 4.0 are specific for midfoot strikers; heel strikers will struggle to feel efficient in them. The updates to this model are all smart improvements, and current fans of this Altra line will be pleased with the result.
I am once again impressed with another great Altra shoe. It seems like Altra keeps putting out better shoes every year and I can’t wait to see what comes next.
If you are good with a neutral runner with solid responsive and moderate cushion, then the Instinct is something to check out.
- One of the biggest updates offered by the Instinct 4.0 is the removal of the stiff toe bumper. In its place is a more pliable one that creates more space and lessens the risks of irritations or blisters.
- Altra also created a significantly more breathable model in this shoe. The added holes all over the shoe makes it definitely more well-ventilated than the previous model.
- A more streamlined look gives it also a more sophisticated appeal that most runners have greatly appreciated.
- The outsole has more rubber for more grip and better cushioning.
- Finally, Altra lessened the foam in the tongue as it is not as bulbous as before, while the heel and ankle collar get more foam for a more plush feel.
Altra basically kept the fit and sizing of the previous model with the latest coming of the Instinct. The trademark FootShape last creates excellent room for the toes to splay. While the forefoot and toe box have ideal space, the heel and midfoot are adequately held in place. The sizing runs true. For those who have slightly wider feet, the generous forefoot space should be more than enough.
Altra’s FootShape outsole creates the premium opportunity for runners to have a more natural and flexible ride. The numerous flex grooves and the detailed outsole provide better shock attenuation and responsiveness. Also, with the thicker outsole, the rubber in the underfoot delivers long-lasting performance for the Instinct 4.0.
An injection molded EVA with Altra properties is called A-Bound midsole by Altra. It provides decent cushioning and responsiveness. The full-length construction enhances the movement through the gait cycle. The same midsole material is also found in the Altra Instinct 4.5.
An engineered mesh upper with more holes delivers a breathable and very supportive ride. The Altra Instinct 4.0 has decent flexibility and hold in the right areas for a secure, but natural movement. The upper shows minimal overlays (the logos only on both sides) to provide security. Only the right mix of flexibility and security hold the foot together for extended periods of time.