Products
Tested using Methodology v0.12
Updated Jun 16, 2026 05:23 PM
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Amazon
Tested using Methodology v0.14
Updated Sep 17, 2026 02:17 PM
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Amazon
Heel Stack Height
42.5 mm
Weight
247.1 g (8.71 oz)
Heel-To-Toe Drop
9.7 mm
Plate
Carbon Fiber
Heel Stack Height
35.9 mm
Weight
252.2 g (8.90 oz)
Heel-To-Toe Drop
6.8 mm
Plate
Fiberglass Rods
Our Verdict
Nike Zoom Fly 6
adidas Adizero Boston 13
The Nike Zoom Fly 6 is a better shoe than the adidas Adizero Boston 13. It's more cushioned and slightly lighter, making it the pick for runners who want one shoe for training and race day. The adidas has more bounce, a firmer feel, and a roomier toe box, so it's the better choice for runners with wider feet or those who prefer a closer-to-the-ground feel.
Variants
- Zoom Fly 6 (Black/Light Smoke Grey/White - (Men - US 9))
- Zoom Fly 6 (Bright Crimson/Lime Blast/Mint Foam/Cave Purple - (Women - US 7))
- Adizero Boston 13 (Black/Cloud White/Grey - (Men - US 9))
- Adizero Boston 13 (Chalk White/Gold Metallic/Orange Tint - (Women - US 7))
Main Differences for
Half/Full Marathon Racing
Half/Full Marathon Racing
Threshold
Half/Full Marathon Racing
7.4
6.9
Heel Stack Height
42.5 mm
35.9 mm
Forefoot Stack Height
32.8 mm
29.1 mm
Forefoot Bending Energy Return
7.0
8.3
Full Comparison
Design
Weight
6.5
6.3
Right Shoe Weight Photo
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Left Shoe Weight Photo
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Weight
247.1 g (8.71 oz)
252.2 g (8.90 oz)
Stack Heights
Stack Height Photo
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Heel Stack Height
42.5 mm
35.9 mm
Forefoot Stack Height
32.8 mm
29.1 mm
Heel-To-Toe Drop
9.7 mm
6.8 mm
Advertised Heel-To-Toe Drop
8.0 mm
6.0 mm
External Shape
3D Model Full Shoe
Preview 3D
Preview 3D
Outsole Heel Width
84 mm (3.3")
83 mm (3.3")
Outsole Arch Width
69 mm (2.7")
62 mm (2.4")
Outsole Forefoot Width
112 mm (4.4")
122 mm (4.8")
Heel Width-To-Stack Ratio
1.98
2.31
Forefoot Width-To-Stack Ratio
3.41
4.19
Internal Shape
3D Model Internal
Preview 3D
Preview 3D
Internal Length
275 mm (10.8")
277 mm (10.9")
Internal Heel Width
61 mm (2.4")
63 mm (2.5")
Internal Forefoot Width
87 mm (3.4")
97 mm (3.8")
Wide Sizing Available
No
No
Forefoot Fit: Width
9.0
8.9
Forefoot Width Photo
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Ball-Of-Foot TTS Deviation
-2.7 mm (-0.105")
3.1 mm (0.122")
Toe TTS Deviation
1.5 mm (0.059")
-2.6 mm (-0.104")
Forefoot Fit: Height
7.8
8.1
Forefoot Height Photo
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Toe TTS Deviation
-2.7 mm (-0.104")
-2.4 mm (-0.095")
Arch Fit: Width
5.5
7.5
Arch Fit Photo
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Arch Width TTS Deviation
-6.4 mm (-0.250")
-4.0 mm (-0.156")
Length Fit
10
10
Toe Clearance Photo
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Heel Rocker Geometry
7.6
5.2
Heel Rocker Photo
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Heel Spring
25 mm (1.0")
13 mm (0.5")
Heel Apex Position
14.5%
20.8%
Heel Rocker Angle
32.0°
12.0°
Forefoot Rocker Geometry
7.2
6.6
Forefoot Rocker Photo
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Toe Spring
48 mm (1.9")
45 mm (1.8")
Toe Apex Position
61.8%
62.5%
Forefoot Rocker Angle
24.6°
22.2°
Foam
Primary Foam Picture
Secondary Foam Picture
Primary Foam Name
Lightstrike Pro
Primary Foam Type
TPEE
Secondary Foam Name
Lightstrike 2.0
Secondary Foam Type
EVA
Laces
Laces Picture
Lace Type
Flat
Width
4.0 mm (0.2")
Thickness
1.2 mm (0.0")
Stretch
6.0%
Other Features
Other Features Photo
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Tongue Gusset Type
Fully-gusseted
Semi-gusseted
Plate
Carbon Fiber
Fiberglass Rods
Performance
Heel Compression Energy Return
5.6
6.7
Heel Compression Video
Heel Energy Return
Preview Graph
Preview Graph
Heel Energy Return
72.8%
75.1%
Forefoot Compression Energy Return
7.5
8.0
Forefoot Compression Video
Forefoot Energy Return
Preview Graph
Preview Graph
Forefoot Energy Return
78.2%
80.8%
Heel Cushioning
7.3
5.9
Heel Cushioning Picture
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Heel Cushioning
Preview Graph
Preview Graph
Energy Absorbed At 550N
3.50 J
2.76 J
Energy Absorbed At 1100N
8.99 J
7.59 J
Energy Absorbed At 1900N
14.93 J
13.09 J
Forefoot Cushioning
7.2
6.6
Forefoot Cushioning Picture
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Forefoot Cushioning
Preview Graph
Preview Graph
Energy Absorbed At 800N
4.41 J
4.14 J
Energy Absorbed At 1300N
7.70 J
7.08 J
Energy Absorbed At 2050N
11.45 J
10.17 J
Heel Firmness
8.2
9.0
Heel Firmness Graph
Preview Graph
Preview Graph
Firmness At 550N
44.7 N/mm
52.5 N/mm
Firmness At 1100N
57.0 N/mm
66.4 N/mm
Firmness At 1900N
81.1 N/mm
93.2 N/mm
Forefoot Firmness
8.8
9.0
Forefoot Firmness Graph
Preview Graph
Preview Graph
Firmness At 800N
64.2 N/mm
65.9 N/mm
Firmness At 1300N
82.9 N/mm
86.5 N/mm
Firmness At 2050N
114 N/mm
121 N/mm
Forefoot Long Run Cushioning
6.6
5.9
Forefoot Long Run Cushioning
Preview Graph
Preview Graph
Energy Absorbed At 10km
7.10 J
6.47 J
Energy Absorbed At 20km
7.03 J
6.30 J
Energy Absorbed At 30km
6.99 J
6.21 J
Energy Absorbed At 40km
6.95 J
6.12 J
Rocker Stiffness
8.2
7.2
Forefoot Rocker Stiffness Video
Forefoot Rocker Stiffness Graph
Preview Graph
Preview Graph
Force To Flatten The Rocker
130 N
90 N
Forefoot Bending Energy Return
7.0
8.3
Forefoot Bending Video
Forefoot Bending Energy Return
Preview Graph
Preview Graph
Forefoot Bending Energy Return
64.7%
74.1%
Forefoot Bending Stiffness
8.6
8.5
Forefoot Bending Resistance Picture
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Forefoot Bending Resistance
Preview Graph
Preview Graph
Forefoot Bending Stiffness
24.1 N/mm
24.3 N/mm
Forefoot Bending Force
370 N
359 N
Nike Zoom Fly 6
adidas Adizero Boston 13
Comments
Nike Zoom Fly 6 vs adidas Adizero Boston 13: Main Discussion
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