Products
Tested using Methodology v0.12
Updated Aug 26, 2026 01:01 PM
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Amazon
Tested using Methodology v0.16
Updated Sep 17, 2026 03:54 PM
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Amazon
Heel Stack Height
37.1 mm
Weight
254.3 g (8.97 oz)
Heel-To-Toe Drop
6.7 mm
Plate
None
Heel Stack Height
38.4 mm
Weight
303.6 g (10.71 oz)
Heel-To-Toe Drop
5.6 mm
Plate
None
Our Verdict
Topo Phantom 4
Topo Aura 2
The Topo Phantom 4 and Topo Aura 2 are both impressively stable low-drop shoes with anatomical toe boxes, but the Aura 2 is the more aggressive support option. It’s much heavier and a bit more expensive, though it is slightly more stable and more deeply cushioned. The Phantom 4 is significantly lighter and a bit more versatile, making it better suited to faster running. Get the Aura 2 if you need the most support and don’t mind paying extra; get the Phantom 4 if you’re a neutral runner who still wants plenty of stability.
Variants
- Phantom 4 (Black/White - (Men - US 9))
- Phantom 4 (Black/White - (Women - US 7))
- Aura 2 (Black/Cloud - (Women - US 7))
- Aura 2 (Charcoal/Green - (Men - US 9))
Main Differences for
Half/Full Marathon Racing
Half/Full Marathon Racing
Threshold
Half/Full Marathon Racing
6.4
6.0
Weight
6.3
4.2
Forefoot Compression Energy Return
3.7
1.7
Heel Stack Height
37.1 mm
38.4 mm
Forefoot Long Run Cushioning
5.5
6.7
Full Comparison
Design
Weight
6.3
4.2
Right Shoe Weight Photo
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Left Shoe Weight Photo
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Weight
254.3 g (8.97 oz)
303.6 g (10.71 oz)
Stack Heights
Stack Height Photo
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Heel Stack Height
37.1 mm
38.4 mm
Forefoot Stack Height
30.4 mm
32.8 mm
Heel-To-Toe Drop
6.7 mm
5.6 mm
Advertised Heel-To-Toe Drop
5.0 mm
5.0 mm
External Shape
3D Model Full Shoe
Preview 3D
Preview 3D
Outsole Heel Width
88 mm (3.5")
93 mm (3.7")
Outsole Arch Width
82 mm (3.2")
83 mm (3.3")
Outsole Forefoot Width
112 mm (4.4")
117 mm (4.6")
Heel Width-To-Stack Ratio
2.37
2.42
Forefoot Width-To-Stack Ratio
3.68
3.57
Internal Shape
3D Model Internal
Preview 3D
Preview 3D
Internal Length
277 mm (10.9")
280 mm (11.0")
Internal Heel Width
67 mm (2.6")
68 mm (2.7")
Internal Forefoot Width
97 mm (3.8")
98 mm (3.9")
Wide Sizing Available
Yes
Yes
Forefoot Fit: Width
7.8
7.4
Forefoot Width Photo
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Ball-Of-Foot TTS Deviation
5.7 mm (0.222")
6.8 mm (0.268")
Toe TTS Deviation
9.1 mm (0.358")
8.7 mm (0.343")
Forefoot Fit: Height
10
8.3
Forefoot Height Photo
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Toe TTS Deviation
0.7 mm (0.026")
-2.2 mm (-0.087")
Arch Fit: Width
8.8
9.9
Arch Fit Photo
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Arch Width TTS Deviation
-2.2 mm (-0.085")
1.4 mm (0.055")
Length Fit
10
10
Toe Clearance Photo
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Heel Rocker Geometry
8.7
5.6
Heel Rocker Photo
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Heel Spring
38 mm (1.5")
15 mm (0.6")
Heel Apex Position
20.3%
22.5%
Heel Rocker Angle
32.3°
12.6°
Forefoot Rocker Geometry
8.0
7.2
Forefoot Rocker Photo
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Toe Spring
58 mm (2.3")
50 mm (2.0")
Toe Apex Position
62.8%
64.8%
Forefoot Rocker Angle
27.8°
25.5°
Foam
Primary Foam Picture
Secondary Foam Picture
Primary Foam Name
ZipFoam
Primary Foam Type
EVA + TPU
Secondary Foam Name
No Secondary Foam
Secondary Foam Type
No Secondary Foam
Laces
Laces Picture
Lace Type
Flat
Width
6.0 mm (0.2")
Thickness
2.2 mm (0.1")
Stretch
10.0%
Breathability
6.0
Breathability Video
Upper Breathability
Upper Microscope Photo
Time-To-Dry
4.6
Time-To-Dry Timelapse
Time-To-Dry Graph
Preview Graph
Time To 30% Dry
10.3 hrs
Time To 70% Dry
25.3 hrs
Time To Dry
39.7 hrs
Water Absorption
7.7
Dry Weight Photo
Wet Weight Photo
Water Absorbed
40.3%
Other Features
Other Features Photo
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Tongue Gusset Type
Non-gusseted
Non-gusseted
Plate
None
None
Performance
Heel Compression Energy Return
1.6
1.0
Heel Compression Video
Heel Energy Return
Preview Graph
Preview Graph
Heel Energy Return
67.0%
64.8%
Forefoot Compression Energy Return
3.7
1.7
Forefoot Compression Video
Forefoot Energy Return
Preview Graph
Preview Graph
Forefoot Energy Return
70.3%
67.0%
Heel Cushioning
7.1
7.3
Heel Cushioning Picture
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Heel Cushioning
Preview Graph
Preview Graph
Energy Absorbed At 550N
3.43 J
3.16 J
Energy Absorbed At 1100N
8.73 J
8.94 J
Energy Absorbed At 1900N
14.32 J
15.62 J
Forefoot Cushioning
7.0
7.7
Forefoot Cushioning Picture
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Forefoot Cushioning
Preview Graph
Preview Graph
Energy Absorbed At 800N
4.52 J
4.78 J
Energy Absorbed At 1300N
7.58 J
8.33 J
Energy Absorbed At 2050N
10.75 J
12.00 J
Heel Firmness
8.5
8.8
Heel Firmness Graph
Preview Graph
Preview Graph
Firmness At 550N
45.9 N/mm
52.5 N/mm
Firmness At 1100N
58.7 N/mm
61.9 N/mm
Firmness At 1900N
84.0 N/mm
84.9 N/mm
Forefoot Firmness
8.9
8.5
Forefoot Firmness Graph
Preview Graph
Preview Graph
Firmness At 800N
64.1 N/mm
60.3 N/mm
Firmness At 1300N
84.0 N/mm
77.5 N/mm
Firmness At 2050N
118 N/mm
108 N/mm
Forefoot Long Run Cushioning
5.5
6.7
Forefoot Long Run Cushioning
Preview Graph
Preview Graph
Energy Absorbed At 10km
5.98 J
7.46 J
Energy Absorbed At 20km
5.87 J
7.21 J
Energy Absorbed At 30km
5.80 J
7.07 J
Energy Absorbed At 40km
5.74 J
6.97 J
Rocker Stiffness
5.6
6.7
Forefoot Rocker Stiffness Video
Forefoot Rocker Stiffness Graph
Preview Graph
Preview Graph
Force To Flatten The Rocker
53 N
77 N
Forefoot Bending Energy Return
4.6
4.6
Forefoot Bending Video
Forefoot Bending Energy Return
Preview Graph
Preview Graph
Forefoot Bending Energy Return
55.4%
55.3%
Forefoot Bending Stiffness
5.8
7.3
Forefoot Bending Resistance Picture
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Forefoot Bending Resistance
Preview Graph
Preview Graph
Forefoot Bending Stiffness
8.4 N/mm
13.9 N/mm
Forefoot Bending Force
219 N
278 N
Heel Compression Depth
5.1
Heel Compression Graph
Preview Graph
Heel Compression At 550N
10.5 mm
Heel Compression At 1100N
17.8 mm
Heel Compression At 1900N
22.4 mm
Forefoot Compression Depth
5.7
Forefoot Compression Graph
Preview Graph
Forefoot Compression At 800N
13.3 mm
Forefoot Compression At 1300N
16.8 mm
Forefoot Compression At 2050N
19.0 mm
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Topo Phantom 4
Topo Aura 2
Comments
Topo Phantom 4 vs Topo Aura 2: Main Discussion
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