Products
Tested using Methodology v0.14
Updated Aug 27, 2026 03:28 PM
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Asics.com
Tested using Methodology v0.15
Updated Sep 03, 2026 03:59 PM
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Decathlon
Heel Stack Height
40.0 mm
Weight
129.3 g (4.56 oz)
Heel-To-Toe Drop
6.8 mm
Plate
Plastic
Heel Stack Height
37.3 mm
Weight
165.0 g (5.82 oz)
Heel-To-Toe Drop
5.4 mm
Plate
Carbon Fiber
Our Verdict
ASICS METASPEED RAY
Kiprun Kipstorm Lab
The ASICS METASPEED RAY and Kiprun Kipstorm Lab are soft, forefoot-plated racing shoes built for very fast runners. The ASICS is the better shoe overall, with lower weight, better cushioning, and more energy return for runners looking to maximize race-day performance. Both are unstable, but the Kiprun feels slightly more controlled and has a more rocker-driven ride, so get it if you prefer a ride that's not quite as extreme.
Variants
- METASPEED RAY (White/Flash Red - (Men - US 9))
- METASPEED RAY (White/Flash Red - (Women - US 7))
- Kipstorm Lab (Light Neon Pink - (Men - US 9))
- Kipstorm Lab (Light Neon Pink - (Women - US 7))
Main Differences for
Half/Full Marathon Racing
Half/Full Marathon Racing
Threshold
Half/Full Marathon Racing
8.6
8.2
Weight
9.7
9.0
Forefoot Bending Energy Return
8.7
7.3
Heel Stack Height
40.0 mm
37.3 mm
Full Comparison
Design
Weight
9.7
9.0
Right Shoe Weight Photo
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Left Shoe Weight Photo
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Weight
129.3 g (4.56 oz)
165.0 g (5.82 oz)
Stack Heights
Stack Height Photo
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Heel Stack Height
40.0 mm
37.3 mm
Forefoot Stack Height
34.5 mm
31.9 mm
Heel-To-Toe Drop
6.8 mm
5.4 mm
Advertised Heel-To-Toe Drop
5.0 mm
4.0 mm
External Shape
3D Model Full Shoe
Preview 3D
Preview 3D
Outsole Heel Width
71 mm (2.8")
84 mm (3.3")
Outsole Arch Width
62 mm (2.5")
61 mm (2.4")
Outsole Forefoot Width
94 mm (3.7")
112 mm (4.4")
Heel Width-To-Stack Ratio
1.78
2.25
Forefoot Width-To-Stack Ratio
2.72
3.51
Internal Shape
3D Model Internal
Preview 3D
Preview 3D
Internal Length
268 mm (10.6")
272 mm (10.7")
Internal Heel Width
54 mm (2.1")
61 mm (2.4")
Internal Forefoot Width
89 mm (3.5")
87 mm (3.4")
Wide Sizing Available
No
No
Forefoot Fit: Width
9.2
9.6
Forefoot Width Photo
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Ball-Of-Foot TTS Deviation
-1.5 mm (-0.059")
2.2 mm (0.085")
Toe TTS Deviation
-2.2 mm (-0.088")
-0.5 mm (-0.019")
Forefoot Fit: Height
9.5
8.6
Forefoot Height Photo
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Toe TTS Deviation
-1.1 mm (-0.041")
-1.9 mm (-0.076")
Arch Fit: Width
7.9
7.3
Arch Fit Photo
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Arch Width TTS Deviation
-3.4 mm (-0.134")
-4.3 mm (-0.168")
Length Fit
10
7.0
Toe Clearance Photo
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Heel Rocker Geometry
8.5
8.0
Heel Rocker Photo
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Heel Spring
38 mm (1.5")
26 mm (1.0")
Heel Apex Position
16.5%
16.7%
Heel Rocker Angle
39.6°
29.0°
Forefoot Rocker Geometry
7.6
8.3
Forefoot Rocker Photo
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Toe Spring
52 mm (2.0")
60 mm (2.4")
Toe Apex Position
63.1%
64.4%
Forefoot Rocker Angle
26.8°
31.0°
Foam
Primary Foam Picture
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Secondary Foam Picture
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Primary Foam Name
FF LEAP
Feather Bounce
Primary Foam Type
A-TPU
PEBA
Secondary Foam Name
N/A
Fluid Foam
Secondary Foam Type
N/A
A-TPU
Laces
Laces Picture
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Lace Type
Sawtooth
Round
Width
5.0 mm (0.2")
2.0 mm (0.1")
Thickness
1.2 mm (0.0")
2.0 mm (0.1")
Stretch
6.5%
6.0%
Other Features
Other Features Photo
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Tongue Gusset Type
Non-gusseted
Non-gusseted
Plate
Plastic
Carbon Fiber
Performance
Heel Compression Energy Return
8.7
7.8
Heel Compression Video
Heel Energy Return
Preview Graph
Preview Graph
Heel Energy Return
85.4%
79.5%
Forefoot Compression Energy Return
9.0
8.0
Forefoot Compression Video
Forefoot Energy Return
Preview Graph
Preview Graph
Forefoot Energy Return
88.0%
80.9%
Heel Cushioning
9.1
7.7
Heel Cushioning Picture
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Heel Cushioning
Preview Graph
Preview Graph
Energy Absorbed At 550N
5.21 J
4.07 J
Energy Absorbed At 1100N
11.54 J
9.26 J
Energy Absorbed At 1900N
17.92 J
14.58 J
Forefoot Cushioning
8.8
8.7
Forefoot Cushioning Picture
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Forefoot Cushioning
Preview Graph
Preview Graph
Energy Absorbed At 800N
5.68 J
5.82 J
Energy Absorbed At 1300N
9.62 J
9.69 J
Energy Absorbed At 2050N
14.37 J
14.00 J
Heel Firmness
4.2
6.6
Heel Firmness Graph
Preview Graph
Preview Graph
Firmness At 550N
27.0 N/mm
34.3 N/mm
Firmness At 1100N
38.6 N/mm
48.5 N/mm
Firmness At 1900N
57.7 N/mm
72.1 N/mm
Forefoot Firmness
4.7
4.9
Forefoot Firmness Graph
Preview Graph
Preview Graph
Firmness At 800N
43.6 N/mm
44.5 N/mm
Firmness At 1300N
58.5 N/mm
59.6 N/mm
Firmness At 2050N
82 N/mm
84 N/mm
Forefoot Long Run Cushioning
8.3
8.1
Forefoot Long Run Cushioning
Preview Graph
Preview Graph
Energy Absorbed At 10km
9.16 J
8.99 J
Energy Absorbed At 20km
9.04 J
8.77 J
Energy Absorbed At 30km
8.91 J
8.66 J
Energy Absorbed At 40km
8.82 J
8.61 J
Rocker Stiffness
6.5
8.6
Forefoot Rocker Stiffness Video
Forefoot Rocker Stiffness Graph
Preview Graph
Preview Graph
Force To Flatten The Rocker
72 N
148 N
Forefoot Bending Energy Return
8.7
7.3
Forefoot Bending Video
Forefoot Bending Energy Return
Preview Graph
Preview Graph
Forefoot Bending Energy Return
77.6%
66.5%
Forefoot Bending Stiffness
8.0
7.5
Forefoot Bending Resistance Picture
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Forefoot Bending Resistance
Preview Graph
Preview Graph
Forefoot Bending Stiffness
23.0 N/mm
14.8 N/mm
Forefoot Bending Force
283 N
289 N
Heel Compression Depth
6.9
Heel Compression Graph
Preview Graph
Heel Compression At 550N
16.0 mm
Heel Compression At 1100N
22.7 mm
Heel Compression At 1900N
26.4 mm
Forefoot Compression Depth
7.4
Forefoot Compression Graph
Preview Graph
Forefoot Compression At 800N
18.0 mm
Forefoot Compression At 1300N
21.8 mm
Forefoot Compression At 2050N
24.4 mm
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ASICS METASPEED RAY
Kiprun Kipstorm Lab
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ASICS METASPEED RAY vs Kiprun Kipstorm Lab: Main Discussion
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