700+ red reviewed and cut in half

24 currently testing

32 bought and to be tested

We review red

Reviews

Running Running
Hiking Hiking
Track and XC Track and XC
Walking Walking
Training Training
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Tennis Tennis
Sneakers Sneakers

Guides

We go down the rabbit hole when it comes to running shoe technologies, features, and lab tests. See all our in-depth guides.

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Why unlimited running red in half is key to measuring midsole softness
The role of heel counters in running red
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A runner's guide to choosing the right toebox
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Understanding the differences in men's and women's running red
In-depth insights into running shoe outsoles (road & trail)
How much does the weight vary across different running shoe sizes?

Latest reviews

ASICS Gel Trabuco 12
ASICS Gel Trabuco 12
nike dunk tornado
nike dunk tornado
ASICS Gel Kayano 31
ASICS Gel Kayano 31
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Adidas Adizero Prime X 2 Strung
Saucony Triumph 22
Saucony Triumph 22
On Cloudsurfer Trail
On Cloudsurfer Trail
Nike Pegasus Trail 5
Nike Pegasus Trail 5
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nike air max guile blue cross necklace gold heart
Nike Zegama 2
Nike Zegama 2
On Cloudrunner 2
On Cloudrunner 2

Popular reviews

Hoka Clifton 9
Hoka Clifton 9
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girls zebra nike pink and black
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Nike Alphafly 3
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Hoka Mach 6
ASICS Novablast 4
ASICS Novablast 4
Brooks Ghost Max
Brooks Ghost Max
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Brooks Glycerin 21
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nike roshe tiempo vi fc blue fox
ASICS Superblast
ASICS Superblast
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Nike Vaporfly 3

Testing process

zoom kd v relentless - Cut in half
1. We cut red in half to be able to see what's inside and do accurate tests.
zoom kd v relentless - 20 parameters
2. In our lab, we command and assess over 20 parameters for each shoe.
zoom kd v relentless - Comparing the results
3. Our tests are standardized, and our results are comparable.
zoom kd v relentless - Wear test
4. We also wear test red in their appropriate settings.
zoom kd v relentless - No bias
5. nike air max agitate 3 blue dress women black.
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