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On Cloudmonster 2 vs Cloudmonster 3

Which Running Shoe Is Better?

    Top
    Main Differences
    Design
      WeightStack HeightsExternal ShapeInternal ShapeForefoot Fit: WidthForefoot Fit: HeightArch Fit: WidthLength FitOther Features
    Performance
      Heel Energy ReturnForefoot Energy ReturnHeel CushioningForefoot CushioningHeel FirmnessForefoot FirmnessForefoot Long Run Cushioning
    Comments

Products

On Cloudmonster 2
On Cloudmonster 3 
early access

Tested using Methodology v0.10

Updated Apr 22, 2026 12:32 PM

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Tested using Methodology v0.10

Updated Apr 02, 2026 05:51 PM

This review is in Early access

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On Cloudmonster 2 Picture

Track

On Cloudmonster 3 Picture

Track

Weight
295.8 g (10.43 oz)
Heel-To-Toe Drop
7.5 mm
Plate
Plastic
Weight
296.6 g (10.46 oz)
Heel-To-Toe Drop
7.3 mm
Plate
Plastic
  1. Recommended in 1 article:
  2. On

Our Verdict

On Cloudmonster 2

On Cloudmonster 3

Full comparison details regarding individual product score sets can be found in the section below

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Variants

  • Cloudmonster 2 (Asphalt/Iron - (Women - US 7))
  • Cloudmonster 2 (Asphalt/Iron - (Men - US 9))
  • Cloudmonster 3 (Black/Black - (Men - US 9))
  • Cloudmonster 3 (Black/Black - (Women - US 7))

Review

See On Cloudmonster 2 Review
See On Cloudmonster 3 Review
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Main Differences for
Marathon Racing

Threshold 

0.10

Marathon Racing 
 

5.9
0.0
No major differences between these running shoes for marathon racing. See full list of tests below.

Full Comparison

Design

Weight  

4.6
N/A

Right Shoe Weight Photo  

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On Cloudmonster 2 Right Shoe Weight Photo
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Left Shoe Weight Photo  

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Weight 
 

295.8 g (10.43 oz)
Lock g (Lock oz)

Stack Heights 
 

Stack Height Photo  

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Heel Stack Height 
 

40.5 mm
Lock mm

Forefoot Stack Height 
 

33.0 mm
Lock mm

Heel-To-Toe Drop 
 

7.5 mm
Lock mm

Advertised Heel-To-Toe Drop 
 

6.0 mm
Lock mm

External Shape 
 

3D Model Full Shoe  

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On Cloudmonster 2 3D Model Full Shoe
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Outsole Heel Width 
 

84 mm (3.3")
Lock mm (Lock")

Outsole Arch Width 
 

78 mm (3.1")
Lock mm (Lock")

Outsole Forefoot Width 
 

113 mm (4.5")
Lock mm (Lock")

Heel Width-To-Stack Ratio 
 

2.07
Lock

Forefoot Width-To-Stack Ratio 
 

3.42
Lock

Internal Shape 
 

3D Model Internal  

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Internal Length 
 

277 mm (10.9")
Lock mm (Lock")

Internal Heel Width 
 

66 mm (2.6")
Lock mm (Lock")

Internal Forefoot Width 
 

93 mm (3.7")
Lock mm (Lock")

Wide Sizing Available 
 

No
Locked

Forefoot Fit: Width 
 

8.8
N/A

Forefoot Width Photo  

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Ball-Of-Foot TTS Deviation 
 

5.1 mm (0.200")
Lock mm (Lock")

Toe TTS Deviation 
 

0.0 mm (-0.001")
Lock mm (Lock")

Forefoot Fit: Height 
 

6.7
N/A

Forefoot Height Photo  

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Toe TTS Deviation 
 

-3.9 mm (-0.154")
Lock mm (Lock")

Arch Fit: Width 
 

9.7
N/A

Arch Fit Photo  

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Arch Width TTS Deviation 
 

2.8 mm (0.111")
Lock mm (Lock")

Length Fit 
 

10
N/A

Toe Clearance Photo  

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Other Features  

Other Features Photo  

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Tongue Gusset Type 
 

Fully-gusseted
Locked

Plate 
 

Plastic
Locked
Performance

Heel Energy Return 
 

1.5
N/A

Heel Compression Video  

On Cloudmonster 3 Heel Compression Video Sample

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Heel Energy Return  

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Heel Energy Return 
 

66.5%
Lock%

Forefoot Energy Return 
 

2.2
N/A

Forefoot Compression Video  

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Forefoot Energy Return  

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Forefoot Energy Return 
 

68.3%
Lock%

Heel Cushioning 
 

7.2
N/A

Heel Cushioning Picture  

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Heel Cushioning  

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Energy Absorbed At 550N 
 

3.37 J
Lock J

Energy Absorbed At 1100N 
 

9.11 J
Lock J

Energy Absorbed At 1900N 
 

14.60 J
Lock J

Forefoot Cushioning 
 

7.3
N/A

Forefoot Cushioning Picture  

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Forefoot Cushioning  

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Energy Absorbed At 800N 
 

4.20 J
Lock J

Energy Absorbed At 1300N 
 

7.85 J
Lock J

Energy Absorbed At 2050N 
 

11.81 J
Lock J

Heel Firmness 
 

5.8
N/A

Heel Firmness  

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Firmness At 550N 
 

48.9 N/mm
Lock N/mm

Firmness At 1100N 
 

130.8 N/mm
Lock N/mm

Firmness At 1900N 
 

271.6 N/mm
Lock N/mm

Forefoot Firmness 
 

7.8
N/A

Forefoot Firmness  

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Firmness At 800N 
 

100.9 N/mm
Lock N/mm

Firmness At 1300N 
 

207.5 N/mm
Lock N/mm

Firmness At 2050N 
 

379.0 N/mm
Lock N/mm

Forefoot Long Run Cushioning 
 

6.2
N/A

Forefoot Long Run Cushioning  

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Energy Absorbed At 10km 
 

6.97 J
Lock J

Energy Absorbed At 20km 
 

6.68 J
Lock J

Energy Absorbed At 30km 
 

6.47 J
Lock J

Energy Absorbed At 40km 
 

6.31 J
Lock J

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On Cloudmonster 2

On Cloudmonster 3

Comments

  1. Comparison
 • Posted 42 minutes ago

On Cloudmonster 2 vs On Cloudmonster 3: Main Discussion

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