New Balance 520 U520SDB | 700+ shoes reviewed and cut in half

24 currently testing

32 New Balance Marineblå og gule 373-sneakers

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

NEW BALANCE M1400JGY GREY 26cm
New Balance M990 Navy Silver 28cm
Dziecięce new balance gc574es1
Why cutting running shoes in half is key to measuring midsole softness
Спортивні штани new balance
zapatillas de running New Balance niño niña pronador talla 47
nike alphafly 3 atomknit 3 21208064 1440 21251583 250
The definitive guide to running shoe breathability
nike alphafly 3 023 21254779 250
All you need to know about rockered running shoes
Cechy New balance 703 V1 Trail Running Shoes
How brands' heel-to-toe drop measurements differ from reality in running shoes
Understanding the differences in men's and women's running shoes
Cós da marca New Balance
In-depth insights into running shoe outsoles (road & trail)
tussen New Balance en Joe Freshgoods het ook erg goed
How much does the weight vary across different running shoe sizes?

Latest reviews

ASICS Gel Trabuco 12
ASICS Gel Trabuco 12
Casaco New Balance Reflective Accelerate Windcheater preto mulher
Casaco New Balance Reflective Accelerate Windcheater preto mulher
ASICS Gel Kayano 31
ASICS Gel Kayano 31
Adidas Adizero Prime X 2 Strung
Adidas Adizero Prime X 2 Strung
zapatillas de running New Balance constitución media talla 47.5
zapatillas de running New Balance constitución media talla 47.5
On Cloudsurfer Trail
On Cloudsurfer Trail
Nike Pegasus Trail 5
Nike Pegasus Trail 5
Hoka Speedgoat 6
Hoka Speedgoat 6
Nike Zegama 2
Nike Zegama 2
On Cloudrunner 2
On Cloudrunner 2

Popular reviews

Hoka Clifton 9
Hoka Clifton 9
New Balance Uomo Fresh Foam X Vongo v5 in Blu Giallo Arancia
New Balance Uomo Fresh Foam X Vongo v5 in Blu Giallo Arancia
zapatillas de running New Balance asfalto constitución media talla 51
zapatillas de running New Balance asfalto constitución media talla 51
New Balance 520 U520SDB
New Balance 520 U520SDB
ASICS Novablast 4
ASICS Novablast 4
Brooks Ghost Max
Brooks Ghost Max
Brooks Glycerin 21
Brooks Glycerin 21
Brooks Adrenaline GTS 23
Brooks Adrenaline GTS 23
ASICS Superblast
ASICS Superblast
Nike Vaporfly 3
Nike Vaporfly 3

Testing process

New Balance MR530 VS Silver Metallic 23cm - Cut in half
1. We cut shoes in half to be able to see what's inside and do accurate tests.
New Balance MR530 VS Silver Metallic 23cm - 20 parameters
2. brand new with original box New Balance M990BK5.
New Balance MR530 VS Silver Metallic 23cm - Comparing the results
3. NEW BALANCE BB550WR1 PURPLE 29cm.
New Balance MR530 VS Silver Metallic 23cm - Wear test
4. We also wear test shoes in their appropriate settings.
New Balance MR530 VS Silver Metallic 23cm - No bias
5. NEW BALANCE M1400JGY GREY 26cm.
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