Type a shoe name, like Pegasus, Clifton or Kayano.

Altra Instinct 4.5

Daily trainer · Neutral · Road · 10.8 oz

Discontinued — we no longer see this shoe in stock. The Altra Instinct replaced it

How it ranks

The Altra Instinct 4.5 ranks among the stronger daily trainers in our data. Comfort and cushioning are its strongest sub-ratings. The rating rests on 3 runner reviews and 4 other rated shoes in the Instinct product line. Another 9 reviews would set the confidence on this shoe's own reviews.

Altra Instinct 4.5

of 4

Current estimate: Good

88/100
Overall
88
Comfort
89
Cushioning
82
Value
70
Durability
67
Appearance
50
Confidence

Confidence

How settled the rating is against every other rated shoe. A shoe can rate high on confidence with relatively few reviews of its own when its product line has a long record and external ratings from retailer sites agree. Confidence will score low when we have few ratings or when runners disagree.

See the product line's history

Confidence

54/100

54

Based on product-line history, external ratings, and 3 runner ratings.

Where to buy

No offers available

Affiliate links included. They never affect our ratings.

Prices updated daily. Last checked Sep 14.


Pros

  • All three reviewers rate comfort 5 out of 5 and use it for everyday miles.
  • One reviewer likes the zero drop and the wide toe box.
  • The Instinct line has climbed steadily, from the 1.5's 60 to the 4.0's 94.

Cons

  • One reviewer finds the upper stitching coming apart at under 100 miles.
  • At 10.8 oz it is heavier than the 8.9 oz median for daily trainers on sale, and one reviewer calls it a heavier shoe.

Rating & Confidence vs. other shoes for sale

Each dot is one rated shoe for sale, placed by its rating and by how much evidence sits behind it. Shoes toward the top right are both well rated and well established.

Confidence
50 60 70 80 90 100 25 50 75 100

Better Shoes Rating

Instinct 4.5 rates 88. This shoe has low certainty. See how we rate shoes.

Better Shoes Rating of prior versions of the Altra Instinct

Each dot is one version of the Instinct, placed by its rating and release year. The gold dot is this shoe.

Rating

Release year

We use the reviews of past versions to inform this shoe’s rating. See why.
  • Instinct 4.5 This shoe

    2018 · 3 reviews

    88 Good

    54 Confidence

  • Instinct 1.5

    2012 · 12 reviews

    61 Below average

    82 Confidence

  • Instinct 4.0

    2017 · 3 reviews

    94 Excellent

    76 Confidence

  • Instinct 3.0

    2015 · 7 reviews

    87 Good

    80 Confidence

  • Instinct 2.0

    2014 · 13 reviews

    77 Decent

    78 Confidence

Reader Ratings

3 ratings
5/5 2
4/5 1
3/5 0
2/5 0
1/5 0

Specs & fit

Sizing and ride details at a glance.

Weight
10.8 oz
Release
2018 Q1
MSRP
$110

Runner reviews

Write a review

Showing 1–3 of 3 written reviews

Comfortable everyday trainer but will it hold up?

4/5

Overall

I like the zero drop, wide toe box and cushioning for my old man feet and knees. Its a heavier shoe, but the comfort factor more than offsets that for everyday mileage. My only complaint is the durability. Less than 100 miles and the stitching on the upper is already coming apart.

Anonymous runner · Jul 3, 2019

30 mpw training for a half marathon came from the Saucony Cortana 4

Comfort
5/5
Cushioning
4/5
Durability
3/5
Appearance
4/5
Value
4/5

Totally changed my mind

5/5

Overall

Never been into the whole barefoot movement but after missing two seasons in college for PF, I tried these now as a post collegiate hobby jogger and I love them. I rotate quite a bit but if my feet are ever bothering me, I run in these and I’ve honestly seen PF go away in one run in these.

zunitk · Jul 17, 2018

70 mpw training for a half marathon came from the HOKA Clifton 3

Comfort
5/5
Cushioning
5/5
Durability
4/5
Appearance
4/5
Value
4/5

Reader review

5/5

Overall

Anonymous runner · Feb 10, 2018

Comfort
5/5
Cushioning
5/5
Durability
5/5
Appearance
4/5
Value
4/5

Alternatives

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More from Altra

Compared to other shoes

See how this shoe compares to others like it.

Current shoe
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Reference shoe
Newest
Lightest / Best overall / Best comfort
Shoe properties
Type
Daily trainer
Daily trainer
Daily trainer
Pronation
Neutral
Neutral
Neutral
Weight
10.8 oz M
8.5 oz M Lightest
Stack
40/35mm
Drop
5mm
Release
2018 Q1
2025 Newest
2023 Q1
MSRP
$110 Lower MSRP
$145
Best price
$149.99
Ratings
Overall
Good (88)
Exceptional (99) Best overall
Comfort
Good (89)
Exceptional (99) Best comfort
Cushioning
Good (82)
Exceptional (99) Best cushioning
Durability
Below average (67)
Very good (92) Best durability
Appearance
Bottom-tier (50)
Very good (91) Best appearance
Value
Decent (70)
Good (88) Best value
Specific shoe

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