Products
Tested using Methodology v1.0
Updated Oct 22, 2026 05:14 PM
SEE PRICE
Amazon
Tested using Methodology v0.12
Updated Sep 23, 2026 02:09 PM
SEE PRICE
Amazon
Heel Stack Height
39.8 mm
Weight
200.7 g (7.08 oz)
Heel-To-Toe Drop
6.4 mm
Plate
Carbon Fiber
Heel Stack Height
39.2 mm
Weight
176.6 g (6.23 oz)
Heel-To-Toe Drop
4.8 mm
Plate
Carbon Fiber
Our Verdict
Nike Alphafly 3
ASICS METASPEED SKY PARIS
The ASICS METASPEED SKY PARIS and Nike Alphafly 3 are both elite racers, but the ASICS is lighter and better suited to shorter distances. The Nike shoe provides more cushioning and a more substantial platform for long races. Get the ASICS if you prioritize low weight and a more immediate toe-off; get the Nike if you want greater protection over the marathon.
Variants
- Alphafly 3 (Black/Olive Aura/Metallic Silver - (Men - US 9))
- Alphafly 3 (Bright Crimson/Lime Blast/Mint Foam/Cave Purple - (Men - US 9))
- METASPEED SKY PARIS (Illuminate Mint/Black - (Men - US 9))
- METASPEED SKY PARIS (Illuminate Mint/Black - (Women - US 7))
Main Differences for
Half/Full Marathon Racing
Half/Full Marathon Racing
Threshold
Half/Full Marathon Racing
8.2
8.3
Weight
8.1
8.8
Full Comparison
Design
Weight
8.1
8.8
Right Shoe Weight Photo
Compare High-Res
Compare High-Res
Left Shoe Weight Photo
Compare High-Res
Compare High-Res
Weight
200.7 g (7.08 oz)
176.6 g (6.23 oz)
Stack Heights
Stack Height Photo
Compare High-Res
Compare High-Res
Heel Stack Height
39.8 mm
39.2 mm
Forefoot Stack Height
33.4 mm
34.4 mm
Heel-To-Toe Drop
6.4 mm
4.8 mm
Advertised Heel-To-Toe Drop
8.0 mm
5.0 mm
External Shape
3D Model Full Shoe
Preview 3D
Preview 3D
Outsole Heel Width
91 mm (3.6")
74 mm (2.9")
Outsole Arch Width
68 mm (2.7")
56 mm (2.2")
Outsole Forefoot Width
116 mm (4.6")
101 mm (4.0")
Heel Width-To-Stack Ratio
2.29
1.89
Forefoot Width-To-Stack Ratio
3.47
2.94
Internal Shape
3D Model Internal
Preview 3D
Preview 3D
Internal Length
273 mm (10.7")
260 mm (10.2")
Internal Heel Width
59 mm (2.3")
49 mm (1.9")
Internal Forefoot Width
90 mm (3.5")
83 mm (3.3")
Wide Sizing Available
No
No
Forefoot Fit: Width
9.4
9.6
Forefoot Width Photo
Compare High-Res
Compare High-Res
Ball-Of-Foot TTS Deviation
-0.8 mm (-0.032")
1.0 mm (0.038")
Toe TTS Deviation
-2.2 mm (-0.087")
-1.5 mm (-0.059")
Forefoot Fit: Height
9.7
10
Forefoot Height Photo
Compare High-Res
Compare High-Res
Toe TTS Deviation
-0.8 mm (-0.030")
3.2 mm (0.128")
Arch Fit: Width
6.2
9.0
Arch Fit Photo
Compare High-Res
Compare High-Res
Arch Width TTS Deviation
-5.6 mm (-0.219")
-1.8 mm (-0.072")
Length Fit
10
7.0
Toe Clearance Photo
Compare High-Res
Compare High-Res
Heel Rocker Geometry
6.6
5.1
Heel Rocker Photo
Compare High-Res
Compare High-Res
Heel Spring
16 mm (0.6")
12 mm (0.5")
Heel Apex Position
15.3%
15.2%
Heel Rocker Angle
21.3°
15.9°
Forefoot Rocker Geometry
6.7
7.4
Forefoot Rocker Photo
Compare High-Res
Compare High-Res
Toe Spring
45 mm (1.8")
50 mm (2.0")
Toe Apex Position
66.4%
65.7%
Forefoot Rocker Angle
26.6°
27.8°
Foam
Primary Foam Picture
Secondary Foam Picture
Primary Foam Name
ZoomX
Primary Foam Type
PEBA
Secondary Foam Name
No Secondary Foam
Secondary Foam Type
No Secondary Foam
Laces
Laces Picture
Lace Type
Sawtooth
Width
6.0 mm (0.2")
Thickness
1.2 mm (0.0")
Stretch
10.5%
Breathability
7.5
Breathability Video
Upper Breathability
Upper Microscope Photo
Time-To-Dry
8.1
Time-To-Dry Timelapse
Time-To-Dry Graph
Preview Graph
Time To 30% Dry
5.1 hrs
Time To 70% Dry
14.9 hrs
Time To Dry
24.3 hrs
Water Absorption
8.4
Dry Weight Photo
Wet Weight Photo
Water Absorbed
35.6%
Other Features
Other Features Photo
Compare High-Res
Compare High-Res
Tongue Gusset Type
Non-gusseted
Non-gusseted
Plate
Carbon Fiber
Carbon Fiber
Performance
Heel Compression Energy Return
8.2
7.8
Heel Compression Video
Heel Energy Return
Preview Graph
Preview Graph
Heel Energy Return
82.0%
79.7%
Forefoot Compression Energy Return
8.2
8.5
Forefoot Compression Video
Forefoot Energy Return
Preview Graph
Preview Graph
Forefoot Energy Return
82.2%
84.0%
Heel Cushioning
7.6
7.5
Heel Cushioning Picture
Compare High-Res
Compare High-Res
Heel Cushioning
Preview Graph
Preview Graph
Energy Absorbed At 550N
3.82 J
3.30 J
Energy Absorbed At 1100N
9.18 J
9.30 J
Energy Absorbed At 1900N
14.96 J
15.81 J
Forefoot Cushioning
8.0
8.0
Forefoot Cushioning Picture
Compare High-Res
Compare High-Res
Forefoot Cushioning
Preview Graph
Preview Graph
Energy Absorbed At 800N
4.68 J
4.69 J
Energy Absorbed At 1300N
8.55 J
8.45 J
Energy Absorbed At 2050N
13.10 J
13.22 J
Heel Firmness
7.4
8.1
Heel Firmness Graph
Preview Graph
Preview Graph
Firmness At 550N
38.8 N/mm
45.4 N/mm
Firmness At 1100N
52.3 N/mm
55.8 N/mm
Firmness At 1900N
75.9 N/mm
78.4 N/mm
Forefoot Firmness
7.9
8.3
Forefoot Firmness Graph
Preview Graph
Preview Graph
Firmness At 800N
57.0 N/mm
60.1 N/mm
Firmness At 1300N
73.1 N/mm
76.6 N/mm
Firmness At 2050N
99 N/mm
103 N/mm
Forefoot Long Run Cushioning
7.8
7.3
Forefoot Long Run Cushioning
Preview Graph
Preview Graph
Energy Absorbed At 10km
8.41 J
7.95 J
Energy Absorbed At 20km
8.33 J
7.81 J
Energy Absorbed At 30km
8.27 J
7.73 J
Energy Absorbed At 40km
8.24 J
7.66 J
Rocker Stiffness
7.9
7.8
Forefoot Rocker Stiffness Video
Forefoot Rocker Stiffness Graph
Preview Graph
Preview Graph
Force To Flatten The Rocker
117 N
110 N
Forefoot Bending Energy Return
8.0
8.7
Forefoot Bending Video
Forefoot Bending Energy Return
Preview Graph
Preview Graph
Forefoot Bending Energy Return
71.3%
78.1%
Forefoot Bending Stiffness
9.5
9.1
Forefoot Bending Resistance Picture
Compare High-Res
Compare High-Res
Forefoot Bending Resistance
Preview Graph
Preview Graph
Forefoot Bending Stiffness
41.6 N/mm
37.1 N/mm
Forefoot Bending Force
484 N
417 N
Forefoot Compression Depth
6.1
Forefoot Compression Graph
Preview Graph
Forefoot Compression At 800N
14.0 mm
Forefoot Compression At 1300N
17.8 mm
Forefoot Compression At 2050N
20.6 mm
Heel Compression Depth
6.3
Heel Compression Graph
Preview Graph
Heel Compression At 550N
14.2 mm
Heel Compression At 1100N
21.0 mm
Heel Compression At 1900N
25.0 mm
Dry Concrete Grip
5.6
Dry Concrete Forefoot Video
Dry Concrete Forefoot Graph
Preview Graph
Sliding Force
149.8 N (33.7 lbf)
Coefficient Of Friction
0.58
Wet Concrete Grip
4.9
Wet Concrete Forefoot Video
Wet Concrete Forefoot Graph
Preview Graph
Sliding Force
129.7 N (29.2 lbf)
Coefficient Of Friction
0.50
Wet Aluminum Grip
4.2
Wet Aluminum Forefoot Video
Wet Aluminum Forefoot Graph
Preview Graph
Sliding Force
70.1 N (15.8 lbf)
Coefficient Of Friction
0.42
Gravel Grip
1.4
Gravel Forefoot Video
Gravel Forefoot Graph
Preview Graph
Sliding Force
23.2 N (5.2 lbf)
Coefficient Of Friction
0.14
Mud Grip
3.6
Mud Forefoot Video
Mud Forefoot Graph
Preview Graph
Sliding Force
60.0 N (13.5 lbf)
Coefficient Of Friction
0.36
Exposed Foam
6.0
Outsole Photo
Heel Exposed Foam
4.0
Forefoot Exposed Foam
8.0
Outsole Abrasion Wear
6.0
Outsole Durability Video
Outsole Durability Photo
Heel Abrasion Wear
4.0
Forefoot Abrasion Wear
8.0
Nike Alphafly 3
ASICS METASPEED SKY PARIS
Comments
Nike Alphafly 3 vs ASICS METASPEED SKY PARIS: Main Discussion
What do you think of these products? Let us know below.
Looking for a personalized buying advice from the RTINGS.com experts? Members have direct access to buying advice on our member forum.