Products
Altra Experience Flow 2
early access
Topo Phantom 4
Tested using Methodology v0.9
Updated Nov 24, 2025 08:47 PM
This review is in Early access
SEE PRICE
Amazon.com
Tested using Methodology v0.9
Updated Nov 21, 2025 09:29 PM
SEE PRICE
Amazon.com
Weight
g ( oz)
Heel-To-Toe Drop
mm
Plate
Weight
254.3 g (8.97 oz)
Heel-To-Toe Drop
6.7 mm
Plate
None
Our Verdict
Altra Experience Flow 2
Topo Phantom 4
Full comparison details regarding individual product score sets can be found in the section below
0
Variants
- Experience Flow 2 (Black/Black - (Men - US 9))
- Experience Flow 2 (Black/Black - (Women - US 7))
- Experience Flow 2 (Black/Orange - (Men - US 9))
- Experience Flow 2 (Black/White - (Men - US 9))
- Experience Flow 2 (Black/White - (Women - US 7))
- Experience Flow 2 (Blue/Yellow - (Men - US 9))
- Experience Flow 2 (Dusty Pink - (Women - US 7))
- Experience Flow 2 (Gray - (Men - US 9))
- Experience Flow 2 (Gray - (Women - US 7))
- Experience Flow 2 (Gray/Teal - (Women - US 7))
- Experience Flow 2 (Light Blue - (Women - US 7))
- Experience Flow 2 (Navy - (Men - US 9))
- Experience Flow 2 (Sand - (Women - US 7))
- Experience Flow 2 (White/Lime - (Men - US 9))
- Experience Flow 2 (White/Orange - (Women - US 7))
- Phantom 4 (Black/White - (Men - US 9))
- Phantom 4 (Black/White - (Women - US 7))
- Phantom 4 (Blue/Lime - (Men - US 9))
- Phantom 4 (Grey/Grey - (Women - US 7))
- Phantom 4 (Purple/Blue - (Women - US 7))
- Phantom 4 (Salt/Natural - (Men - US 9))
- Phantom 4 (Salt/Natural - (Women - US 7))
- Phantom 4 (Stone/Black - (Men - US 9))
Main Differences for
Marathon Racing
Marathon Racing
Threshold
Marathon Racing
5.9
Full Comparison
Design
Weight
6.3
Right Shoe Weight Photo
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Left Shoe Weight Photo
Compare High-Res
Weight
254.3 g (8.97 oz)
Stack Heights
Stack Height Photo
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Heel Stack Height
37.1 mm
Forefoot Stack Height
30.4 mm
Heel-To-Toe Drop
6.7 mm
Advertised Heel-To-Toe Drop
5.0 mm
External Shape
3D Model Full Shoe
Outsole Heel Width
88 mm (3.5")
Outsole Arch Width
82 mm (3.2")
Outsole Forefoot Width
112 mm (4.4")
Heel Width-To-Stack Ratio
2.37
Forefoot Width-To-Stack Ratio
3.68
Internal Shape
3D Model Internal
Internal Length
277 mm (10.9")
Internal Heel Width
67 mm (2.6")
Internal Forefoot Width
97 mm (3.8")
Wide Sizing Available
Yes
Other Features
Other Features Photo
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Tongue Gusset Type
Non-gusseted
Plate
None
Performance
Heel Energy Return
1.6
Heel Compression Video
Heel Energy Return
Heel Energy Return
67.0%
Forefoot Energy Return
3.7
Forefoot Compression Video
Forefoot Energy Return
Forefoot Energy Return
70.3%
Heel Cushioning
7.1
Heel Cushioning Picture
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Heel Cushioning
Energy Absorbed At 550N
3.43 J
Energy Absorbed At 1100N
8.73 J
Energy Absorbed At 1900N
14.32 J
Forefoot Cushioning
7.0
Forefoot Cushioning Picture
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Forefoot Cushioning
Energy Absorbed At 800N
4.52 J
Energy Absorbed At 1300N
7.58 J
Energy Absorbed At 2050N
10.75 J
Heel Firmness
6.2
Heel Firmness
Firmness At 550N
54.0 N/mm
Firmness At 1100N
130.1 N/mm
Firmness At 1900N
282.7 N/mm
Forefoot Firmness
8.5
Forefoot Firmness
Firmness At 800N
113.2 N/mm
Firmness At 1300N
252.5 N/mm
Firmness At 2050N
498.8 N/mm
Forefoot Long Run Cushioning
5.5
Forefoot Long Run Cushioning
Energy Absorbed At 10km
5.98 J
Energy Absorbed At 20km
5.87 J
Energy Absorbed At 30km
5.80 J
Energy Absorbed At 40km
5.74 J
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Altra Experience Flow 2
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Comments
Altra Experience Flow 2 vs Topo Phantom 4: Main Discussion
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