Nike Streakfly 2 vs Vaporfly 4

Which Running Shoe Is Better?

Products

Nike Streakfly 2
Nike Vaporfly 4

Tested using Methodology v0.9

Updated Oct 27, 2025 06:27 PM

Amazon.com

Tested using Methodology v0.9

Updated Oct 16, 2025 05:20 PM

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Our Verdict

Nike Streakfly 2

Nike Vaporfly 4

The Nike Streakfly 2 and the Nike Vaporfly 4 are both lightweight racing shoes from the Oregon-based brand, but they're tuned for very different purposes. The Streakfly 2 is lighter and lower to the ground, designed for all-out efforts over shorter distances like the 5K or 10K. It delivers a firmer, more direct feel underfoot, with a sharp forefoot rocker that rewards fast turnover but offers limited protection for longer efforts. The Vaporfly 4, by contrast, is more versatile and better suited to mid-distance racing from 10K up to the half-marathon. It carries more stack height, providing greater cushioning and protection while still maintaining a snappy, efficient ride, with a carbon plate that's stiffer than the Streakfly's thin, flexible plate.

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Variants

  • Streakfly 2 (Bright Crimson/Hyper Orange/Gridiron/Lime Blast - (Men - US 9))
  • Streakfly 2 (Bright Crimson/Hyper Orange/Gridiron/Lime Blast - (Women - US 7))
  • Streakfly 2 (Ghost/Persian Violet/Blue Lightning/Blue Void - (Men - US 9))
  • Streakfly 2 (Ghost/Persian Violet/Blue Lightning/Blue Void - (Women - US 7))
  • Streakfly 2 (Sail/Total Orange/White/Black - (Men - US 9))
  • Streakfly 2 (Sail/Total Orange/White/Black - (Women - US 7))
  • Streakfly 2 (White/Obsidian Mist/Pure Platinum/Gridiron - (Men - US 9))
  • Streakfly 2 (White/Obsidian Mist/Pure Platinum/Gridiron - (Women - US 7))
  • Vaporfly 4 (Bright Crimson/Mint Foam/Cave Purple/Lime Blast - (Men - US 9))
  • Vaporfly 4 (Bright Crimson/Mint Foam/Cave Purple/Lime Blast - (Women - US 7))
  • Vaporfly 4 (Ghost/Persian Violet/Football Grey/Blue Void - (Men - US 9))
  • Vaporfly 4 (Ghost/Persian Violet/Football Grey/Blue Void - (Women - US 7))
  • Vaporfly 4 (Sail/Total Orange/White/Black - (Men - US 9))
  • Vaporfly 4 (Sail/Total Orange/White/Black - (Women - US 7))
  • Vaporfly 4 (White/Obsidian Mist/Pure Platinum/Gridiron - (Men - US 9))

Main Differences for
Marathon Racing

Threshold 

0.10

Marathon Racing 

6.6
7.4

Heel Stack Height 
 

26.7 mm
35.1 mm

Forefoot Stack Height 
 

22.6 mm
26.4 mm

Weight  

9.8
9.1

Full Comparison

Design

Weight  

9.8
9.1

Right Shoe Weight Photo  

Left Shoe Weight Photo  

Weight 
 

121.5 g (4.28 oz)
160.5 g (5.66 oz)
Show Text 

Stack Heights 
 

Stack Height Photo  

Heel Stack Height 
 

26.7 mm
35.1 mm

Forefoot Stack Height 
 

22.6 mm
26.4 mm

Heel-To-Toe Drop 
 

4.1 mm
8.8 mm

Advertised Heel-To-Toe Drop 
 

4.0 mm
6.0 mm
Show Text 

External Shape 
 

3D Model Full Shoe  

Outsole Heel Width 
 

71 mm (2.8")
75 mm (3.0")

Outsole Arch Width 
 

48 mm (1.9")
50 mm (2.0")

Outsole Forefoot Width 
 

99 mm (3.9")
108 mm (4.3")

Heel Width-To-Stack Ratio 
 

2.66
2.13

Forefoot Width-To-Stack Ratio 
 

4.38
3.84
Show Text 

Internal Shape 
 

3D Model Internal  

Internal Length 
 

264 mm (10.4")
271 mm (10.7")

Internal Heel Width 
 

55 mm (2.2")
60 mm (2.4")

Internal Forefoot Width 
 

85 mm (3.3")
92 mm (3.6")

Wide Sizing Available 
 

No
No
Show Text 

Other Features  

Other Features Photo  

Tongue Gusset Type 
 

Non-gusseted
Non-gusseted

Plate 
 

Carbon Fiber
Carbon Fiber
Show Text 
Performance

Heel Energy Return 
 

8.3
8.6

Heel Compression Video  

Heel Energy Return  

See details
See details

Heel Energy Return 
 

82.9%
84.4%
Show Text 

Forefoot Energy Return 
 

8.5
8.3

Forefoot Compression Video  

Forefoot Energy Return  

See details
See details

Forefoot Energy Return 
 

84.0%
82.6%
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Heel Cushioning 
 

4.3
6.4

Heel Cushioning Picture  

Heel Cushioning  

See details
See details

Energy Absorbed At 550N 
 

2.85 J
3.64 J

Energy Absorbed At 1100N 
 

5.95 J
8.00 J

Energy Absorbed At 1900N 
 

9.03 J
12.32 J
Show Text 

Forefoot Cushioning 
 

5.3
6.2

Forefoot Cushioning Picture  

Forefoot Cushioning  

See details
See details

Energy Absorbed At 800N 
 

3.60 J
4.09 J

Energy Absorbed At 1300N 
 

5.68 J
6.59 J

Energy Absorbed At 2050N 
 

7.94 J
9.46 J
Show Text 

Heel Firmness 
 

8.8
7.3

Heel Firmness  

See details
See details

Firmness At 550N 
 

84.5 N/mm
59.3 N/mm

Firmness At 1100N 
 

231.0 N/mm
167.7 N/mm

Firmness At 1900N 
 

542.7 N/mm
383.4 N/mm
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Forefoot Firmness 
 

9.4
9.0

Forefoot Firmness  

See details
See details

Firmness At 800N 
 

168.6 N/mm
141.4 N/mm

Firmness At 1300N 
 

360.2 N/mm
293.3 N/mm

Firmness At 2050N 
 

736.3 N/mm
555.3 N/mm
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Forefoot Long Run Cushioning 
 

5.1
5.8

Forefoot Long Run Cushioning  

See details
See details

Energy Absorbed At 10km 
 

5.57 J
6.30 J

Energy Absorbed At 20km 
 

5.48 J
6.19 J

Energy Absorbed At 30km 
 

5.43 J
6.11 J

Energy Absorbed At 40km 
 

5.38 J
6.06 J
Show Text 

Nike Streakfly 2

Nike Vaporfly 4

Comments

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Nike Streakfly 2 vs Nike Vaporfly 4: Main Discussion

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