adidas adizero Boston 9

Name: adidas adizero Boston 9
Brand: adidas

Daily trainer · Neutral · Road · 8.4 oz (men's)

Discontinued — we no longer see this shoe in stock. The adidas adizero Boston 10 replaced it

How it ranks

The adidas adizero Boston 9’s rating is an early estimate. We’ve collected 2 runner reviews so far, with product line history also informing the score.

Current estimate: Good

Overall

Good 81

Durability

Very good 92

Appearance

Good 87

Value

Good 82

Cushioning

Below average 66

Comfort

Below average 61

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 is low when we have few ratings or when runners disagree.

See the product line's history

Confidence

19 Low

Low 19

Based on

The bars show roughly how much each source contributes to this shoe’s rating. Their influence depends on how many reviews we’ve collected, how many earlier versions are in the product line, and the external ratings available.

Product line track record
Our ratings
External ratings

Prefer this shoe over another

40% 2/5

Where to buy

No offers available

Affiliate links included. They never affect our ratings.

Prices updated daily. Last checked Oct 29.

Pros

At 8.4 oz, reviewers use it for daily runs and tempo.
Reviewers describe a firm, responsive ride that snaps forward at speed.

Cons

The adizero Boston 8 before it scores 98 on twenty reviews against its 80.
It is firm and low-stack, which one reviewer says feels less supportive than a standard trainer.

adizero Boston 9 rates 81. This shoe has low confidence. See how we rate shoes.

Better Shoes Rating of prior versions of the adidas adizero Boston

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

Rating

40 60 80 100

80 2014 73 2014 80 2017 88 2018 93 2019 81 2020 88 2021 67 2022 88 2023 85 2025 90 2014

Release year

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

Adizero Boston 5 Boost

2014 · 35 reviews

90 Very good

92 Confidence
adizero Boston 13

2025 · 2 reviews

85 Good

53 Confidence
adizero Boston 12

2023 · 58 reviews

88 Good

92 Confidence
adizero Boston 11

2022 · 14 reviews

67 Below average

62 Confidence
adizero Boston 10

2021 · 11 reviews

88 Good

50 Confidence
adizero Boston 9 This shoe

2020 · 2 reviews

81 Good

19 Confidence
adizero Boston 8

2019 · 20 reviews

93 Excellent

77 Confidence
adizero Boston 7

2018 · 34 reviews

88 Good

96 Confidence
adizero Boston 6

2017 · 41 reviews

80 Good

94 Confidence
adiZero Boston 4

2014 · 9 reviews

73 Decent

45 Confidence
adizero Boston 3

2014 · 8 reviews

80 Good

65 Confidence

Runner Ratings

2 ratings

5/5 1

4/5 1

3/5 0

2/5 0

1/5 0

See written reviews Write a review

Specs & fit

Sizing and ride details at a glance.

Weight: 8.4 oz (men's)
Release: 2020 Q1

Runner reviews

Write a review

Boston 9 Review

5/5

Overall

A feel good lightweight trainer from adidas. This shoe can fit the need as a secondary trainer that has a relatively low stack and is 8.5oz. It has enough cushion to be used more than a flat and it is extremely durable. These shoes can last hundreds of miles before appearing wore down. The Boston 9s are also inexpensive, retail $120, but with some searching easily found in the $60-$90 range. They are very versatile as they can be used for a training run, start of a workout before breaking out the flats, or a long run tempo. They are narrow compared to other shoes and they are also firm. This is not your soft cloud high cushion shoe but it is great as an additional trainer for when you want to feel good on a run.

Anonymous runner · Feb 21, 2022

80 mpw training for a half marathon came from the adidas adizero Boston 8

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

Fastest teacher

4/5

Overall

Overall, this shoe is brilliant. Beginning with the first step into the shoe, it's very minimalistic and it doesn't feel as supportive as a standard daily trainer. But once you get moving, it's all forgotten and it's just a good shoe with good comfort. The upper fits perfect to size and is very comfortable as tongue is attached to the sidewalls and is soft which makes it very comfortable. The cushioning is very dependent on the person. Despite the slab of boost foam running through the shoe and lightstrike carefully laid on top and surrounding the boost, it's actually quite firm. It's firm with a brilliant response and somehow it implements a snap forward during fast paces. It's more for long and fast intervals, like a tempo run or something. But you can easily get away with short track reps in these shoes, and get to your goal time. I've been able to consistently pull out 30 second 200's in these shoes and it felt great during it. Because of the boost running through the shoe, it's easily able to do daily training as well. I personally have also used it for that purpose and it felt great. Do keep in mind that it requires you to be almost injury free so I resorted to buying the solarboost 19 so I can avoid those. If you're strong, you can use this as a daily trainer. The durability was disappointing, but I'm 90% sure that it's a bad product from the factory because of the sheer amount of continental rubber that broke down. Continental rubber does not break down easily on my other shoes. In about 3 months, I had to replace these because the outsole was getting too bad. The midsole was also feeling terrible and hurting my feet after runs. It's probably just a bad apple from the factory. I believe it is a bad apple because it only got to 250 miles, when really it should get to around 350 miles. So I'm quite sad that the shoe only lasted 250 miles, I really wanted to continue using it. The appearance is beautiful, all the colors are great looking, especially the signal coral shoes. I personally have the Boston Marathon edition of the shoe and I felt bad running in it due to the beautiful detailing. Overall, this shoe will last 350 miles and will feel great during all those miles.

Parkles · Jan 18, 2021

40 mpw training for a half marathon came from the adidas SL20