HOKA Skyward X vs adidas Adizero Prime X 2.0 STRUNG

Which Running Shoe Is Better?

Products

HOKA Skyward X
adidas Adizero Prime X 2.0 STRUNG

Tested using Methodology v0.9

Updated Oct 29, 2025 06:55 PM

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Hoka.com

Tested using Methodology v0.8.2

Updated Oct 24, 2025 08:37 PM

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Amazon.com
  1. Recommended in 1 article:
  2. Long Distance

Our Verdict

HOKA Skyward X

adidas Adizero Prime X 2.0 STRUNG

The HOKA Skyward X and the adidas Adizero Prime X 2.0 STRUNG are both max-stack, carbon-plated trainers that push the boundaries of comfort and technology, but they diverge in purpose and feel. The adidas is a bit lighter and slightly firmer, with a geometry and dual carbon plates that deliver a distinct pop, especially noticeable at marathon pace or faster efforts. It's built to energize long, steady workouts. In contrast, the Skyward X prioritizes plushness and smooth transitions, offering a pillowy ride that's best left for recovery days or easy miles when you want maximum cushioning without much propulsion. 

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Variants

  • Skyward X (Black/Electric Aqua - (Men - US 9))
  • Skyward X (Blanc De Blanc/Swim Day - (Women - US 7))
  • Skyward X (Blanc De Blanc/Virtual Blue - (Men - US 9))
  • Skyward X (Cosmic Grey/Rose Gold - (Women - US 7))
  • Skyward X (Cosmic Grey/Silver - (Men - US 9))
  • Skyward X (Frost/Lupine - (Men - US 9))
  • Skyward X (Frost/Lupine - (Women - US 7))
  • Skyward X (Lettuce/Cloudless - (Men - US 9))
  • Skyward X (Lettuce/Cloudless - (Women - US 7))
  • Skyward X (Luna Moth/Black - (Men - US 9))
  • Skyward X (Mint Fluorite /Blue Spark - (Women - US 7))
  • Adizero Prime X 2.0 STRUNG (Cloud White/Core Black/Lucid Red - (Men - US 9))
  • Adizero Prime X 2.0 STRUNG (Core Black/Zero Metalic/Spark - (Men - US 9))
  • Adizero Prime X 2.0 STRUNG (Lucid Lemon/Core Black/Halo Silver - (Women - US 7))
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Main Differences for
Marathon Racing

Threshold 

0.10

Marathon Racing 

7.3
7.7

Forefoot Energy Return 
 

7.7
8.8

Weight  

4.1
4.6

Full Comparison

Design

Weight  

4.1
4.6

Right Shoe Weight Photo  

Left Shoe Weight Photo  

Weight 
 

306.9 g (10.82 oz)
295.8 g (10.43 oz)
Show Text 

Stack Heights 
 

Stack Height Photo  

Heel Stack Height 
 

50.4 mm
46.4 mm

Forefoot Stack Height 
 

43.6 mm
37.2 mm

Heel-To-Toe Drop 
 

6.8 mm
9.2 mm

Advertised Heel-To-Toe Drop 
 

5.0 mm
9.0 mm

External Shape 
 

3D Model Full Shoe  

Outsole Heel Width 
 

95 mm (3.7")
83 mm (3.3")

Outsole Arch Width 
 

82 mm (3.2")
72 mm (2.8")

Outsole Forefoot Width 
 

119 mm (4.7")
115 mm (4.5")

Heel Width-To-Stack Ratio 
 

1.88
1.79

Forefoot Width-To-Stack Ratio 
 

2.73
3.09

Internal Shape 
 

3D Model Internal  

Internal Length 
 

274 mm (10.8")
275 mm (10.8")

Internal Heel Width 
 

60 mm (2.4")
61 mm (2.4")

Internal Forefoot Width 
 

91 mm (3.6")
93 mm (3.7")

Wide Sizing Available 
 

No
No

Other Features  

Other Features Photo  

Tongue Gusset Type 
 

Semi-gusseted
Non-gusseted

Plate 
 

Carbon Fiber
Carbon Fiber
Show Text 
Performance

Heel Energy Return 
 

7.5
8.2

Heel Compression Video  

Heel Energy Return  

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Heel Energy Return 
 

78.1%
82.2%
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Forefoot Energy Return 
 

7.7
8.8

Forefoot Compression Video  

Forefoot Energy Return  

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See details

Forefoot Energy Return 
 

79.2%
86.3%
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Heel Cushioning 
 

8.8
8.8

Heel Cushioning Picture  

Heel Cushioning  

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See details

Energy Absorbed At 550N 
 

3.56 J
3.92 J

Energy Absorbed At 1100N 
 

11.41 J
11.03 J

Energy Absorbed At 1900N 
 

21.08 J
19.24 J
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Forefoot Cushioning 
 

9.6
8.9

Forefoot Cushioning Picture  

Forefoot Cushioning  

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See details

Energy Absorbed At 800N 
 

6.19 J
5.53 J

Energy Absorbed At 1300N 
 

11.79 J
9.86 J

Energy Absorbed At 2050N 
 

18.34 J
15.39 J
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Heel Firmness 
 

3.7
4.3

Heel Firmness  

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See details

Firmness At 550N 
 

42.8 N/mm
44.9 N/mm

Firmness At 1100N 
 

79.0 N/mm
91.4 N/mm

Firmness At 1900N 
 

169.4 N/mm
201.1 N/mm
Show Text 

Forefoot Firmness 
 

5.3
6.5

Forefoot Firmness  

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See details

Firmness At 800N 
 

66.2 N/mm
87.4 N/mm

Firmness At 1300N 
 

128.1 N/mm
162.4 N/mm

Firmness At 2050N 
 

250.9 N/mm
272.8 N/mm
Show Text 

Forefoot Long Run Cushioning 
 

9.0

Forefoot Long Run Cushioning  

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Energy Absorbed At 10km 
 

10.59 J

Energy Absorbed At 20km 
 

10.34 J

Energy Absorbed At 30km 
 

10.19 J

Energy Absorbed At 40km 
 

10.08 J

HOKA Skyward X

adidas Adizero Prime X 2.0 STRUNG

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HOKA Skyward X vs adidas Adizero Prime X 2.0 STRUNG: Main Discussion

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