Altra Instinct 4.5 Review – A Running Shoe Worth Buying?

A shoe to do it all is not easy to come across. The Altra Instinct 4.5 shoe claims it’s versatile and will last for a long time.

Altra Instinct 4.5 Shoe

I know for a fact that you can’t judge a book by its cover, so there’s no point coming to a conclusion when I don’t have all the facts.

In this article I aim to figure out all the pros and cons, all the features and how well it performs.

Keep reading my Altra Instinct 4.5 shoe review for the true.

The Rundown

Product name: Altra Instinct 4.5

Cheapest Place to Buy:

Gender: Men

Weight: 9.8 ounces

Colorways: 3

Best for: Road running, pavement running, race course, treadmill

Bad for: Athletic activities like basketball, tennis, volleyball, etc

My rating: 4.3/5

Product Overview

This shoe was created for ultimate versatility. The manufacturers describe it as the do-it-all shoe, but it’s mostly designed for running on the road and race course.

The 4.5 version has been upgraded with many different features.

It consists of a brand new engineered mesh upper, a more durable and comfortable midsole and a full rubber outsole for more abrasion resistance.

The insole is one entire piece and not many different pieces stitched together, which adds more cushioning and comfort.

It’s pretty lightweight (only 9.8 ounces) and has balanced cushioning. This means the heel and forefoot are at the same distance to the ground, which promotes low-impact running.

The FootShape Toe Box feature allows your toes to spread out naturally rather than being restricted, and the outsoles specially designed bone and tendon map helps your feet move naturally.

Altra Instinct 4.5 Shoe Outsole

Key Features

Balanced Cushioning – Keeps your toes and forefoot at the same distance from the ground for low-impact form

FootShape Toe Box – More room in the toe area allows your toes to move and spread without being restricted

Inner Flex – Encourages a balance between performance, weight and speed with the midsoles grid-like grooves

FootPod Technology – This special feature mimics the anatomy of your bones and tendons which allows your feet and toes to bend/move naturally

Mesh Upper – The mesh upper helps cut down on weight and promotes ventilation, which is going to prevent sweat buildup in the feet


Things You Should Know

Good for Narrow Heels

Some of the community like these shoes because they’re snug around the heel area.

This allows them to enjoy their run without the shoes flopping around and causing discomfort or pain.

Light and Roomy

These shoes are loved by the community due to the lightweight and roominess they provide, and I will have to agree with them.

Altra puts an emphasis on toe room because many shoes overlook this and end up creating a shoe that’s highly constricting in the toes.

Our toes are supposed to move freely as we run and this shoe allows us to do that comfortably.

Incredible Cushioning

Something worth mentioning is the amount of cushioning this shoe provides.

Altra have gone all out by adding the balanced cushioning, inner flex and Footpod technology.

People are using these and feeling like they are running on clouds.

It’s helped ease the pain for those with knee discomfort.

People Continue to Buy Them

Customers just continue to come back for more because that’s how much they love these shoes.

They last a long time and when they are old and worn out, they buy the same pair.

Repeat customers is a good sign that the shoe performs beyond expectations.

They Run True to Size

After checking the online reviews I noticed that there were a couple of complaints about the sizing being too narrow or too big.

However, 84% of the buyers claim they fit true to size which is a high percentage compared to other shoes I have seen.

I would say order your normal Altra size and you should be good.

Price & Purchase Details

These shoes are available from the popular online store:

They’re available in mens and women sizes and come with a 30-day return policy.

This lets people send their shoes back if they don’t like their purchase.

At the time of writing this article they are under $100, which in my opinion, is good value for money.

Check Price and Availability

Pros and Cons


  • Incredibly comfortable
  • Good running shoes
  • Lots of support and stability
  • Lots of room in the toe box, especially good for people with a wide forefoot
  • Ample features
  • Good value for money
  • Lightweight


  • Lacks color options
  • Not a lot of sizes available

Do I Recommend This Shoe?

Look, Altra really does have the people in mind and they want nothing but the best.

I can see that as I have reviewed many of their shoes.

They want the wearer to be comfortable, have lots of support, stability and a great run.

And they do that so well as you can see with all the positive reviews they’ve accumulated.

However, there are a small minority of people who do not like them and that’s okay, they aren’t for them but for the majority of buyers, they absolutely love them.

The sizing is great, the comfort is high and the support is amazing.

It’s in a good price range (under $100 bucks) and people keep buying more which says a lot about performance.

I think you know where this is heading.

The Altra Instinct 4.5 shoe is highly recommended thanks to the low price range, comfort and everything else mentioned in this article.

Alternative/Similar Shoes

There are other great shoes with lots of color options and sizes. One of my favorite alternatives is the Altra Lone Peak 4.0. However, they are mostly good for trail running, not on the road or pavements.

However, a shoe good for road running with a lots of sizes is the Brooks Adrenaline GTS 19. These also have wide size options for those with wide feet!

Final Opinion

All in all, there are lots of things to love about this shoe and little to hate.

I could not find any negative things that were worth mentioning, other than the few complaints about the sizes being off.

But I checked and 84% of people find the sizes to be perfect.

Also the lack of color options is a con for people that want good looking shoes.

But other than that, these shoes perform incredibly well.

Are they worth the money? Definitely.

Are they good for almost any activity like the manufacturers claim? Not really.

I would say they are best for running and should be kept at that.

The Altra Instinct 4.5 are great shoes and well worth the money.

Get the Altra Instinct 4.5 Shoes Here

Well that concludes my Altra Instinct 4.5 review.

Please let us know in the comments below if you have any questions and concerns.

Cheers and have a great day.


Leave a Comment