Our verdict
Pros
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- Excellent grip
- Breathable upper
- Versatile for different workouts
- Protective underfoot
- Extremely durable outsole
- Made with recycled materials
- Attractive design
Cons
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Audience verdict
Comparison
The most similar running shoes compared
+ + adidas ndr1 sneakers sale | |||||
---|---|---|---|---|---|
Audience score | 83 Good! | 90 Superb! | 90 Superb! | 89 Great! | |
Price | $160 | $180 | $250 | $160 | |
Pace | Speed training | Speed training | CompetitionSpeed training | Speed training | |
Arch support | Neutral | Neutral | Neutral | Neutral | |
Weight lab Weight brand | 10.2 adidas q21600 women black shoes clearance 9.6 oz / 272g | 9.3 oz / 264g 9.7 oz / 275g | 8.2 oz / 232g 8.1 oz / 230g | 9.2 oz / 261g 9.2 water slide bounce house for sale | |
Lightweight | ✗ | ✗ | ✓ | ✗ | |
Drop lab Drop brand | 9.8 mm 8.5 mm | 8.4 mm 6.0 mm | 9.3 mm 4.0 mm | 6.1 mm 6.5 mm | |
Strike pattern | HeelMid/forefoot | HeelMid/forefoot | HeelMid/forefoot | Mid/forefoot | |
Midsole softness | Balanced | Soft | Soft | Balanced | |
Difference in midsole softness in cold | Normal | Normal | Small | SmallNormal | |
Toebox durability | Bad | Bad | Decent | Bad | |
Heel padding durability | Decent | Good | Decent | Decent | |
Outsole durability | Good | Good | Good | Good | |
Breathability | Moderate | Moderate | Moderate | Breathable | |
Toebox width at the widest part | Wide | Medium | Medium | Medium | |
Toebox width at the big toe | Medium | Medium | Medium | Medium | |
Stiffness | Stiff | Stiff | Stiff | Moderate | |
Difference in stiffness in cold | Big | Small | Small | Small | |
Torsional rigidity | Stiff | Stiff | Stiff | Stiff | |
Heel counter stiffness | Moderate | Moderate | Flexible | Flexible | |
Plate | Carbon plate | Carbon plate | Carbon plate | - | |
Rocker | ✓ | ✓ | ✓ | ✓ | |
Heel lab Heel brand | 39.1 mm 39.5 mm | 39.3 mm 40.0 mm | 38.2 mm 40.0 mm | 34.5 mm 37.0 mm | |
Forefoot lab Forefoot brand | 29.3 mm 31.0 mm | 30.9 mm 34.0 mm | 28.9 mm 36.0 mm | 28.4 mm 30.5 mm | |
Widths available | NarrowNormalWide | NormalWide | NormalWide | NormalWide | |
Orthotic friendly | ✓ | ✓ | ✓ | ✓ | |
Season | Summer | Winter | Summer | Summer | |
Removable insole | ✓ | ✓ | ✓ | ✓ | |
Ranking | #312 Bottom 24% | #34 Top 14% | #37 Top 15% | #61 Top 24% | |
Popularity | #342 Bottom 16% | #139 Bottom 45% | #169 Bottom 33% | #140 Bottom 45% |
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- Are looking for a durable shoe that can handle races and don't mind it being heavier than racing shoes
- Seek a cushioned-yet-firm ride for long-distance training sessions
Who should NOT buy
If you prefer plush or even moderately soft foams, we suggest staying away from the Boston 11. The same advice goes for those in search of flexible running shoes, as this one leans towards firmness and rigidity with its Energyrods.
youtube adidas hardbass black women blue eyes ASICS Novablast 3. It's a fast-and-light daily trainer that comfortably handles a wide range of speeds. On the other hand, if a flexible speed trainer is what you're after, the Nike Streakfly could be your match. It's fast, agile, and incredibly soft while maintaining excellent flexibility.
Breathability
The Boston 11 handles summer runs without a hitch. The moment we got our hands on the shoe and felt the upper with our fingers, we were impressed by its thin, breathable engineered mesh.
Despite this, we didn't give it a full 5/5 score in our jaw-dropping smoke test—we huaihai for a 4. You might be wondering why—the reason lies with the shoe's tongue.
While the toebox plays a crucial role in breathability, discomfort can arise if other parts of the shoe don't allow for heat and humidity to escape.
Though the medial part of the Boston 11 offers sufficient breathability—a fact confirmed by our light test—the tongue could potentially be a problem on the hottest days.
Even so, when it comes to breathability, let us be clear: this shoe is superb—99% of runs should posture no problem.
Our observations in the lab reinforced our initial impressions. Under the microscope, we found a strikingly thin mesh—a true testament to precise manufacturing—that allowed for extraordinary airflow.
Adizero Boston 11 | 4 |
Average | 3.8 |
Durability
Toebox durability
The Boston 11 employs an engineered mesh that exhibits outstanding breathability, as we've previously noted. However, this material falls short when it comes to durability—it's highly susceptible to wear and tear.
Our dremel test, which applies a force of 3.4N for four seconds to every shoe in the lab, really put the Boston 11 through the wringer. The hyper-thin layer of mesh offered almost no resistance at all.
We strongly believe Adidas could up their game in this regard in the v12. Of course, a thinner mesh typically has less robustness compared to a thicker one, but consider the Nike Alphafly 2. This model also sports a thin, competition-focused and breathable layer, yet it doesn't compromise on durability.
![Adidas Adizero Boston 11 Toebox durability](https://cdn.runrepeat.com/storage/gallery/product_content/38864/adidas-adizero-boston-11-toebox-durability-2-20032300-main.jpg)
Adizero Boston 11 | 1 |
Average | 2.4 |
Heel padding durability
Luckily, the Boston 11's heel padding is really great. This is good news for runners who often wear holes in this area.
Our tough Dremel test on the soft fabric that Adidas uses in this area showed it holds up really well.
Adizero Boston 11 | 3 |
Average | 3.2 |
what is nmd drug made in the world list | Outsole hardness
A standout feature of Adidas's Continental rubber is its exceptional grip, even though it's a hard compound.
This is a rare quality, as most brands need to use softer rubber to ensure a good level of traction. Adidas and Continental shine in this unique, hard-yet-grippy approach.
![Adidas Adizero Boston 11 Outsole hardness](https://cdn.runrepeat.com/storage/gallery/product_content/38864/adidas-adizero-boston-11-outsole-hardness-20020681-main.jpg)
Adizero Boston 11 | 86.3 HC |
Average | 80.5 HC |
Outsole durability
We put our trusty Dremel to work once more—this time on the outsole—and found only a minimal 0.74 mm wear in the rubber. This is an excellent result pointing to the shoe's long-term durability.
This shoe truly stands the test of time.
Adizero Boston 11 | 0.7 mm |
Average | 0.9 mm |
Outsole thickness
With a thickness of 3.3 mm, the rubber on the shoe is pretty standard, but it's so sturdy that you're likely to wear out many other parts of the shoe before the outsole.
![Adidas Adizero Boston 11 Outsole thickness](https://cdn.runrepeat.com/storage/gallery/product_content/38864/adidas-adizero-boston-11-outsole-thickness-20020679-main.jpg)
Adizero Boston 11 | 3.3 mm |
Average | 3.2 mm |
Weight
Sporting a thick midsole, we quickly realised we were dealing with a chunky shoe. Adidas tried to lighten the load with a simpler upper design, but it wasn't enough.
Disappointingly, the shoe still tips the scale over the mental barrier of 10 oz—it weighs in at 10.2 oz or 290g. Let's hope that Adidas improves this issue in the Boston 12.
![Adidas Adizero Boston 11 Weight](https://cdn.runrepeat.com/storage/gallery/product_content/38864/adidas-adizero-boston-11-weight-20020678-main.jpg)
Adizero Boston 11 | 10.23 oz (290g) |
Average | 9.38 oz (266g) |
Cushioning
Heel stack
With a stack height height of 39.1 mm, the Boston 11 just falls within the World Athletics regulation of 40 mm, making it a legal shoe for racing.
We think it's a good option for almost any heel striker that seeks a high-yet-stable shoe, but it's not a great competition shoe, though.
![adidas adizero boston 11 heel stack 20020677 main](https://cdn.runrepeat.com/storage/gallery/product_content/38864/adidas-adizero-boston-11-heel-stack-20020677-main.jpg)
Adizero Boston 11 | 39.1 mm |
Average | 33.7 mm |
Forefoot stack
There's also a significant level of cushioning in the forefoot of the shoe, as our precise measurements reveal it to be 29.3 mm.
![Adidas Adizero Boston 11 Forefoot stack](https://cdn.runrepeat.com/storage/gallery/product_content/38864/adidas-adizero-boston-11-forefoot-stack-20020676-main.jpg)
Adizero Boston 11 | 29.3 mm |
Average | 25.0 mm |
Drop
This leads to a drop that's typical for Adidas shoes—at 9.8 mm.
So, even though the brand's official numbers indicates an 8.5 mm drop, we discovered it to be slightly steeper. This feature makes the shoe particularly well-suited for heel strikers, as a higher heel-to-toe drop facilitates the transition towards the midfoot and forefoot.
![adidas adizero boston 11 drop 20020674 main](https://cdn.runrepeat.com/storage/gallery/product_content/38864/adidas-adizero-boston-11-drop-20020674-main.jpg)
Adizero Boston 11 | 9.8 mm |
Average | 8.7 mm |
Insole thickness
To offset the weight from its thick midsole, as we mentioned before, we noticed in the lab that Adidas has used a few clever methods.
That's why the insole is leaner than those found in most other running shoes on the market.
![Adidas Adizero Boston 11 Insole thickness](https://cdn.runrepeat.com/storage/gallery/product_content/38864/adidas-adizero-boston-11-insole-thickness-20020673-main.jpg)
Adizero Boston 11 | 3.4 mm |
Average | 4.5 mm |
Midsole softness
The Adidas Boston 11 makes use of two distinct foams:
- Lightstrike is a standard EVA foam that, to us, feels notably firm. It doesn't have much bounce, but it does contribute to a stable ride.
- Lightstrike Pro, on the other hand, is the premier foam in Adidas' arsenal, boasting impressive energy return.
We clocked the hardness of Lightstrike at 22.0 HA, but it felt significantly firmer to us during our test runs.
That's because Lightstrike is renowned for having a really long break-in period, so expect a very firm ride for a while.
![Adidas Adizero Boston 11 Midsole softness](https://cdn.runrepeat.com/storage/gallery/product_content/38864/adidas-adizero-boston-11-midsole-softness-20020671-main.jpg)
Adizero Boston 11 | 22.0 HA |
Average | 21.4 HA |
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Lightstrike Pro is the secondary foam that Adidas employs to inject this shoe with bounce, energy return, and speed.
Even though we measured its hardness at 23.5 HA, which is technically firmer than Lightstrike, it felt quite the opposite to us. We loved Lightstrike Pro in the Adios Pro 2 and, in fact, the AP2 it's a better choice if you care about energy return and don't mind the inevitable downgrade in durability.
![Adidas Adizero Boston 11 adidas nmd r2 aq0197 price list india 2019 indians](https://cdn.runrepeat.com/storage/gallery/product_content/38864/adidas-adizero-boston-11-secondary-foam-softness-20020670-main.jpg)
Adizero Boston 11 | 23.5 HA |
Average | 24.9 HA |
Difference in midsole softness in cold
We gave the 11th version of the Boston a brief, 20-minute stint in the freezer before testing it again. After this cold-exposure test, we found the Lightstrike foam to measure 29.5 HA.
That's a jump of 34.1% from its normal state. It's not as good as the typical shoe, but that makes sense considering EVA foam never do well in cold temperatures.
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![Adidas Adizero Boston 11 Midsole softness in cold](https://cdn.runrepeat.com/storage/gallery/product_content/38864/adidas-adizero-boston-11-midsole-softness-in-cold-20020672-main.jpg)
Adizero Boston 11 | 34.1% |
Average | 25.5% |
Stability
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Despite its significant stack height, we find the Boston 11 surprisingly stable.
Torsional rigidity
This stability is due to its carbon plate, Adidas' fibreglass Energyrods, and the firm foam we mentioned earlier.
That's also why we rated this shoe at 4/5 in our torsional rigidity test. It really felt stiff to us.
Adizero Boston 11 | 4 |
Average | 3.2 |
Heel counter stiffness
The same principle applies to the heel counter. Adidas is simply making an effort to increase stability, offsetting the high-stack height's potential side-effects.
Adizero Boston 11 | 3 |
Average | 2.8 |
Midsole width in the forefoot
In our lab, we found the midsole width to be 109.3 mm.
This measurement is less than what we initially anticipated for this shoe, but it still provides enough stability for runners who land on their midfoot or forefoot, even in the fastest tempo runs.
![adidas adizero boston 11 midsole width in the forefoot 20020568 main](https://cdn.runrepeat.com/storage/gallery/product_content/38864/adidas-adizero-boston-11-midsole-width-in-the-forefoot-20020568-main.jpg)
Adizero Boston 11 | 109.3 mm |
Average | 113.7 mm |
Midsole width in the heel
The heel tells a similar tale. Once again, it seems like Adidas prioritised weight savings. If they had made the shoe as wide as the average training shoe, it could have ended up 10% or 20% heavier.
The narrower design could potentially compromise the shoe's stability and comfort for some heel strikers.
![Adidas Adizero Boston 11 Midsole width in the heel](https://cdn.runrepeat.com/storage/gallery/product_content/38864/adidas-adizero-boston-11-midsole-width-in-the-heel-20020567-main.jpg)
Adizero Boston 11 | 84.9 mm |
Average | 90.5 mm |
Flexibility
what is nmd drug made in the world list | Stiffness
By now, it's clear that we're dealing with a stiff shoe. However, we really LOVE testing shoes in our lab and wanted to put a number on it.
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Adizero Boston 11 | 35.3N |
Average | 29.2N |
Difference in stiffness in cold
We also put the shoe's stiffness to the test after a freezer-cooling session, just like we did for the midsole softness.
The EVA-based Lightstrike foam, once again, showed significant change under cold conditions. This time, we recorded a stiffer reading of 50.1N.
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The change is quite account, leading us to conclude that this shoe might not be the best choice for running in colder weather.
Adizero Boston 11 | 42% |
Average | 35.9% |
Size and fit
Internal length
Coming in at 268.6 mm, it aligns almost perfectly with the Adidas size chart, which lists 270 mm. We're confident in declaring this a true-to-size running shoe.
![Adidas Adizero Boston 11 Internal length](https://cdn.runrepeat.com/storage/gallery/product_content/38864/adidas-adizero-boston-11-internal-length-20020565-main.jpg)
Adizero Boston 11 | 268.6 mm |
Average | 269.3 mm |
Length
The Boston 11 features a fully-gusseted tongue that improves the fit and prevents internal movements.
Although we might have preferred a semi-gusseted design for a more balanced feel, we're fine with this setup.
Adizero Boston 11 | True to size |
Toebox width at the widest part
Following our field testing and precise measurements of the upper, we're can confirm that the Boston 11 is an excellent, roomy choice for those with wide feet. Thumbs up for those 103.7 mm!
![Adidas Adizero Boston 11 Toebox width at the widest part](https://cdn.runrepeat.com/storage/gallery/product_content/38864/adidas-adizero-boston-11-toebox-width-at-the-widest-part-20020564-main.jpg)
Adizero Boston 11 | 103.7 mm |
Average | 98.4 mm |
Toebox width at the big toe
There's even more good news for those of us blessed (?) with wide feet.
From our in-depth evaluations, we can confidently affirm that the Boston 11 is an excellent fit for those whose toes do not have significant size variation, such as those with Celtic, German, or Roman foot shapes—forming a near-perfect match.
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![Adidas Adizero Boston 11 Toebox width at the big toe](https://cdn.runrepeat.com/storage/gallery/product_content/38864/adidas-adizero-boston-11-toebox-width-at-the-big-toe-20020563-main.jpg)
Adizero Boston 11 | 80.5 mm |
Average | 78.2 mm |
Toebox feel
Sporting a thick midsole, we quickly realised we were dealing with a chunky shoe. Adidas tried to lighten the load with a simpler upper design, but it wasn't enough.
Disappointingly, the shoe still tips the scale over the mental barrier of 10 oz—it weighs in at 10.2 oz or 290g. Let's hope that Adidas improves this issue in the Boston 12.
Adizero Boston 11 | Medium |
Tongue: gusset type
The Boston 11 features a fully-gusseted tongue that improves the fit and prevents internal movements.
Although we might have preferred a semi-gusseted design for a more balanced feel, we're fine with this setup.
![Adidas Adizero Boston 11 Tongue: gusset type](https://cdn.runrepeat.com/storage/gallery/product_content/38864/adidas-adizero-boston-11-tongue-gusset-type-20020561-main.jpg)
Adizero Boston 11 | Both sides (full) |
Comfort
Tongue padding
We found the tongue padding to measure 4.1 mm. This is a surprisingly pleasant result, particularly for a shoe that's specifically designed for tempo runs.
Most training shoes in the Adizero line, like the light purple adidas superstar women gold with its 1.8 mm padding, sport a much thinner tongue.
![Adidas Adizero Boston 11 Tongue padding](https://cdn.runrepeat.com/storage/gallery/product_content/38864/adidas-adizero-boston-11-tongue-padding-20020562-main.jpg)
Adizero Boston 11 | 4.1 mm |
Average | 5.6 mm |
Heel tab
In line with Adidas' latest design trends in running shoes, the Boston 11 features a flap-like pull tab on the heel. This serves two purposes—it makes slipping your foot into the shoe easier and adds a unique aesthetic touch.
![adidas adizero boston 11 heel tab 20020560 main](https://cdn.runrepeat.com/storage/gallery/product_content/38864/adidas-adizero-boston-11-heel-tab-20020560-main.jpg)
Adizero Boston 11 | Pull tab |
Removable insole
We encountered no issues whatsoever when inserting our concern orthotics or swapping in the insoles from another shoe into the Boston 11.
![adidas adizero boston 11 removable insole 20020559 main](https://cdn.runrepeat.com/storage/gallery/product_content/38864/adidas-adizero-boston-11-removable-insole-20020559-main.jpg)
Adizero Boston 11 | Yes |
Misc
joggers elements
Adidas maintains its track record of omitting joggers elements from its running shoes. Although they've stayed consistent with their design approach, it's disappointing and concerning for us, particularly from a safety perspective.
Night runners really need those joggers components for increased visibility. We certainly hope Adidas revisits this aspect in the Boston 12.
![adidas adizero boston 11 joggers elements 20020558 main](https://cdn.runrepeat.com/storage/gallery/product_content/38864/adidas-adizero-boston-11-reflective-elements-20020558-main.jpg)
Adizero Boston 11 | No |