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.
WeightMen: 8.6ozWomen: 8.6oz
Heel to toe dropMen: 0mmWomen: 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: 23mmWomen: 23mm
Forefoot heightMen: 23mmWomen: 23mm
WidthMen: normalWomen: normal
Release dateJul 2017
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88 / 100 based on 1 expert reviews
Nice job by Altra on these.
Updates to Altra Impulse Flash
- On-lookers will be mesmerized by the reflective properties of the upper of the Altra Impulse Flash. Whether it is day or night, the upper of this shoe will look like it is lighting up with every stride. Style-wise, this makes the shoe unique, but the design also serves more practical purposes, especially in environments where the lighting is low.
- The Flash version of the Altra Impulse also features Altra’s FootPod technology, where both the pattern of the outsole and midsole of the shoe are mapped according to the bones and tendons of the feet. This makes it possible for the shoe to move together with the foot naturally.
- With its zero drop platform, the Altra Impulse Flash remedies the pain felt in certain areas of the foot or leg when running for a long period of time. It is also responsible for giving runners a more efficient and natural stride.
Altra Impulse Flash size and fit
The Impulse Flash by Altra comes in with standard shoe lengths. Those interested in the shoe can order a pair in their usual sizes. The same goes with the shoe’s width – it comes in standard measurements. Ladies will be able to get the shoes in B – Medium width, while gentlemen have the D – Medium width.
The outsole of the Impulse Flash has two technologies that help with flexibility, support, and protection. It starts with the InnerFlex technology. Normally, a regular shoe’s outsole would only have patterns on the part that can be seen. With the InnerFlex, mapped-out patterns that improve the shoe’s flexibility are found both on the outside and the inside portion of the mid-sole.
The StabiliPod technology is found on the outsole, as well. This design is composed of three pods that were purposefully placed on the heel, and the side-mounds of the platform. These pods are like tripods, preventing the foot from collapsing or pronating excessively.
The material the outsole is made of is a lightweight rubber, which helps protect the bottom of the shoe from wear and tear.
This Altra shoe has a moderately cushioned midsole that’s made up of Altra’s special blend of A-Bound technology and EVA foam. The A-Bound is made with recycled materials. Its main purpose is to give the midsole some durability. It also enhances the energy-return and offers the runner a springier step. On the other hand, the EVA foam is more for the runner’s underfoot comfort.
The footbed has a 5mm contour which helps absorb the shock the bottom of the feet receives when running. This feature also enhances the underfoot feel of the shoe.
The upper of the Impulse Flash is a fully reflective material that is lightweight and friction-free. The reflective properties of this upper aims to make the shoe useful and even eye-catching during night runs or runs in environments where there are only a few light sources.
An overlay runs from the sides of the shoe going to the heel. This minor detail offers lightweight support on the sides of the foot, and it helps keep the heel in place. It’s non-reflective, but it enhances the structure of the shoe with its minimal support.
The asymmetrical lacing system makes it possible for the runner to customize the fit. The fit will be more secure as users tighten the laces, so runners won’t have to worry about the shoe accidentally slipping off.