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Tested using Methodology v0.15
Updated Oct 27, 2026 04:05 PM
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Tested using Methodology v0.16
Updated Oct 28, 2026 12:49 PM
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Altra
Heel Stack Height
33.1 mm
Weight
209.0 g (7.37 oz)
Heel-To-Toe Drop
5.8 mm
Plate
None
Heel Stack Height
33.7 mm
Weight
237.7 g (8.38 oz)
Heel-To-Toe Drop
5.0 mm
Plate
Plastic
Our Verdict
adidas Zenboost
Altra Vanish Tempo 2
The adidas Zenboost is a better choice than the Altra Vanish Tempo 2 for most runners. The two shoes have similar stack heights, but the adidas is lighter and better cushioned. Both shoes are better suited to shorter distances, so the Zenboost's lower price tag makes it a more sensible choice. Both shoes are very wide around the ball of your foot, but the adidas tapers more toward the toes, so if you want more room for your toes to splay, the Altra is the better choice.
Variants
- Zenboost (Cloud White/Bliss Lilac/Bliss Lilac - (Women - US 7))
- Zenboost (Cloud White/Cloud White/Core Black - (Men - US 9))
- Vanish Tempo 2 (White/Silver - (Men - US 9))
- Vanish Tempo 2 (White/Silver - (Women - US 7))
Main Differences for
Half/Full Marathon Racing
Half/Full Marathon Racing
Threshold
Half/Full Marathon Racing
6.5
6.8
Weight
7.9
6.9
Forefoot Stack Height
27.3 mm
28.7 mm
Forefoot Bending Energy Return
5.5
7.8
Full Comparison
Design
Weight
7.9
6.9
Right Shoe Weight Photo
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Left Shoe Weight Photo
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Weight
209.0 g (7.37 oz)
237.7 g (8.38 oz)
Stack Heights
Stack Height Photo
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Heel Stack Height
33.1 mm
33.7 mm
Forefoot Stack Height
27.3 mm
28.7 mm
Heel-To-Toe Drop
5.8 mm
5.0 mm
Advertised Heel-To-Toe Drop
6.0 mm
4.0 mm
External Shape
3D Model Full Shoe
Preview 3D
Preview 3D
Outsole Heel Width
79 mm (3.1")
88 mm (3.5")
Outsole Arch Width
72 mm (2.8")
79 mm (3.1")
Outsole Forefoot Width
114 mm (4.5")
117 mm (4.6")
Heel Width-To-Stack Ratio
2.39
2.61
Forefoot Width-To-Stack Ratio
4.18
4.07
Internal Shape
3D Model Internal
Preview 3D
Preview 3D
Internal Length
279 mm (11.0")
276 mm (10.9")
Internal Heel Width
63 mm (2.5")
64 mm (2.5")
Internal Forefoot Width
97 mm (3.8")
95 mm (3.7")
Wide Sizing Available
No
No
Forefoot Fit: Width
8.9
9.1
Forefoot Width Photo
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Ball-Of-Foot TTS Deviation
4.5 mm (0.176")
3.7 mm (0.146")
Toe TTS Deviation
-0.9 mm (-0.035")
3.7 mm (0.144")
Forefoot Fit: Height
4.2
6.1
Forefoot Height Photo
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Toe TTS Deviation
-6.7 mm (-0.265")
-4.7 mm (-0.184")
Arch Fit: Width
9.9
7.9
Arch Fit Photo
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Arch Width TTS Deviation
1.1 mm (0.042")
-3.4 mm (-0.134")
Length Fit
10
7.0
Toe Clearance Photo
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Heel Rocker Geometry
6.3
7.2
Heel Rocker Photo
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Heel Spring
12 mm (0.5")
19 mm (0.7")
Heel Apex Position
14.8%
19.4%
Heel Rocker Angle
25.8°
19.1°
Forefoot Rocker Geometry
6.2
6.7
Forefoot Rocker Photo
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Toe Spring
42 mm (1.7")
45 mm (1.8")
Toe Apex Position
61.5%
59.5%
Forefoot Rocker Angle
21.1°
21.4°
Foam
Primary Foam Picture
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Secondary Foam Picture
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Primary Foam Name
BOOST +
FAST TRN
Primary Foam Type
Unknown
PEBA
Secondary Foam Name
No Secondary Foam
No Secondary Foam
Secondary Foam Type
No Secondary Foam
No Secondary Foam
Laces
Laces Picture
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Lace Type
Flat
Sawtooth
Width
6.0 mm (0.2")
6.0 mm (0.2")
Thickness
1.8 mm (0.1")
1.4 mm (0.1")
Stretch
11.0%
6.5%
Breathability
9.0
Breathability Video
Upper Breathability
Upper Microscope Photo
Time-To-Dry
9.4
Time-To-Dry Timelapse
Time-To-Dry Graph
Preview Graph
Time To 30% Dry
3.3 hrs
Time To 70% Dry
8.6 hrs
Time To Dry
14.0 hrs
Water Absorption
9.4
Dry Weight Photo
Wet Weight Photo
Water Absorbed
26.2%
Other Features
Other Features Photo
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Tongue Gusset Type
Semi-gusseted
Non-gusseted
Plate
None
Plastic
Performance
Heel Compression Energy Return
8.2
8.6
Heel Compression Video
Heel Energy Return
Preview Graph
Preview Graph
Heel Energy Return
81.8%
84.4%
Forefoot Compression Energy Return
7.7
8.7
Forefoot Compression Video
Forefoot Energy Return
Preview Graph
Preview Graph
Forefoot Energy Return
79.0%
85.1%
Heel Cushioning
6.8
6.4
Heel Cushioning Picture
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Heel Cushioning
Preview Graph
Preview Graph
Energy Absorbed At 550N
3.43 J
3.56 J
Energy Absorbed At 1100N
8.65 J
8.04 J
Energy Absorbed At 1900N
13.66 J
12.33 J
Forefoot Cushioning
5.9
5.6
Forefoot Cushioning Picture
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Forefoot Cushioning
Preview Graph
Preview Graph
Energy Absorbed At 800N
3.95 J
3.72 J
Energy Absorbed At 1300N
6.36 J
6.06 J
Energy Absorbed At 2050N
8.87 J
8.55 J
Heel Firmness
8.4
7.9
Heel Firmness Graph
Preview Graph
Preview Graph
Firmness At 550N
44.7 N/mm
39.3 N/mm
Firmness At 1100N
57.9 N/mm
55.7 N/mm
Firmness At 1900N
84.5 N/mm
83.6 N/mm
Forefoot Firmness
9.1
9.1
Forefoot Firmness Graph
Preview Graph
Preview Graph
Firmness At 800N
64.7 N/mm
65.8 N/mm
Firmness At 1300N
88.2 N/mm
89.9 N/mm
Firmness At 2050N
126 N/mm
128 N/mm
Forefoot Long Run Cushioning
5.4
5.4
Forefoot Long Run Cushioning
Preview Graph
Preview Graph
Energy Absorbed At 10km
5.99 J
5.96 J
Energy Absorbed At 20km
5.81 J
5.85 J
Energy Absorbed At 30km
5.68 J
5.79 J
Energy Absorbed At 40km
5.59 J
5.73 J
Rocker Stiffness
6.3
7.0
Forefoot Rocker Stiffness Video
Forefoot Rocker Stiffness Graph
Preview Graph
Preview Graph
Force To Flatten The Rocker
68 N
86 N
Forefoot Bending Energy Return
5.5
7.8
Forefoot Bending Video
Forefoot Bending Energy Return
Preview Graph
Preview Graph
Forefoot Bending Energy Return
58.7%
69.9%
Forefoot Bending Stiffness
6.1
7.2
Forefoot Bending Resistance Picture
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Forefoot Bending Resistance
Preview Graph
Preview Graph
Forefoot Bending Stiffness
6.3 N/mm
11.6 N/mm
Forefoot Bending Force
273 N
296 N
Heel Compression Depth
5.5
5.9
Heel Compression Graph
Preview Graph
Preview Graph
Heel Compression At 550N
12.3 mm
14.0 mm
Heel Compression At 1100N
19.0 mm
19.7 mm
Heel Compression At 1900N
22.5 mm
22.7 mm
Forefoot Compression Depth
5.1
5.0
Forefoot Compression Graph
Preview Graph
Preview Graph
Forefoot Compression At 800N
12.4 mm
12.2 mm
Forefoot Compression At 1300N
14.7 mm
14.5 mm
Forefoot Compression At 2050N
16.3 mm
16.0 mm
adidas Zenboost
Altra Vanish Tempo 2
Comments
adidas Zenboost vs Altra Vanish Tempo 2: Main Discussion
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