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HOKA Skyward X vs adidas Adizero Prime X 2.0 STRUNG

Side-by-Side Comparison

Products

HOKA Skyward X
adidas Adizero Prime X 2.0 STRUNG

Tested using Methodology v0.8.1

Updated Aug 22, 2025 12:28 PM

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Hoka.com

Tested using Methodology v0.8.1

Updated Jul 24, 2025 01:26 PM

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Amazon.com
HOKA Skyward X Picture
adidas Adizero Prime X 2.0 STRUNG Picture
  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))

Main Differences for
Marathon Racing

Threshold 

0.10

Marathon Racing 

7.3
7.7

Forefoot Energy Return 
 

7.5
8.6

Weight  

4.1
4.6

Heel Energy Return 
 

7.1
8.2

Full Comparison

Design

Weight  

4.1
4.6

Right Shoe Weight Photo  

HOKA Skyward X Right Shoe Weight Photo
adidas Adizero Prime X 2.0 STRUNG Right Shoe Weight Photo

Left Shoe Weight Photo  

HOKA Skyward X Left Shoe Weight Photo
adidas Adizero Prime X 2.0 STRUNG Left Shoe Weight Photo

Weight 
 

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

Stack Heights 
 

Stack Height Photo  

HOKA Skyward X Stack Height Photo
adidas Adizero Prime X 2.0 STRUNG 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  

HOKA Skyward X 3D Model Full Shoe
adidas Adizero Prime X 2.0 STRUNG 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  

HOKA Skyward X 3D Model Internal
adidas Adizero Prime X 2.0 STRUNG 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  

HOKA Skyward X Other Features Photo
adidas Adizero Prime X 2.0 STRUNG Other Features Photo

Tongue Gusset Type 
 

Semi-gusseted
Non-gusseted

Plate 
 

Carbon Fiber
Carbon Fiber
Show Text 
Performance

Heel Energy Return 
 

7.1
8.2

Heel Compression Video  

Heel Energy Return  

See details
See details

Heel Energy Return 
 

81.5%
87.0%
Show Text 

Forefoot Energy Return 
 

7.5
8.6

Forefoot Compression Video  

Forefoot Energy Return  

See details
See details

Forefoot Energy Return 
 

82.9%
89.2%
Show Text 

Heel Cushioning 
 

8.0
8.5

Heel Cushioning Picture  

HOKA Skyward X Heel Cushioning Picture
adidas Adizero Prime X 2.0 STRUNG Heel Cushioning Picture

Heel Cushioning  

See details
See details

Energy Absorbed At 300N 
 

1.10 J
1.31 J

Energy Absorbed At 600N 
 

3.97 J
4.19 J

Energy Absorbed At 900N 
 

7.63 J
7.41 J
Show Text 

Forefoot Cushioning 
 

8.8
8.8

Forefoot Cushioning Picture  

HOKA Skyward X Forefoot Cushioning Picture
adidas Adizero Prime X 2.0 STRUNG Forefoot Cushioning Picture

Forefoot Cushioning  

See details
See details

Energy Absorbed At 300N 
 

1.08 J
1.14 J

Energy Absorbed At 600N 
 

3.68 J
3.53 J

Energy Absorbed At 900N 
 

6.88 J
6.27 J
Show Text 

Heel Firmness 
 

5.2
5.0

Heel Firmness  

See details
See details

Average Firmness 0 To 300N 
 

39.0 N/mm
33.5 N/mm

Average Firmness 300 To 600N 
 

46.6 N/mm
46.6 N/mm

Average Firmness 600 To 900N 
 

61.3 N/mm
69.3 N/mm
Show Text 

Forefoot Firmness 
 

5.9
6.6

Forefoot Firmness  

See details
See details

Average Firmness 0 To 300N 
 

39.9 N/mm
38.1 N/mm

Average Firmness 300 To 600N 
 

51.6 N/mm
56.0 N/mm

Average Firmness 600 To 900N 
 

70.4 N/mm
81.9 N/mm
Show Text 

HOKA Skyward X

adidas Adizero Prime X 2.0 STRUNG

Comments

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

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