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Tested using Methodology v0.15
Updated Sep 24, 2026 03:48 PM
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Amazon
Tested using Methodology v0.14
Updated Oct 23, 2026 02:54 PM
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Heel Stack Height
38.2 mm
Weight
303.4 g (10.70 oz)
Heel-To-Toe Drop
8.5 mm
Plate
None
Heel Stack Height
41.5 mm
Weight
295.9 g (10.44 oz)
Heel-To-Toe Drop
11.1 mm
Plate
None
Our Verdict
Brooks Glycerin GTS 23
ASICS GEL-KAYANO 33
The ASICS GEL-KAYANO 33 is a better support shoe than the Brooks Glycerin GTS 23. Though both use sidewalls to offer impressive stability for overpronators, the ASICS is lighter and much more protective across runner weights, strike patterns, and distances, with a plusher feel underfoot. The Brooks only makes sense if you prefer the classic, firmer Brooks ride.
Variants
- Glycerin GTS 23 (Black/Black/Ebony - (Men - US 9))
- Glycerin GTS 23 (Black/Cyber Yellow/Nightlife - (Men - US 9))
- GEL-KAYANO 33 (Black/Black - (Men - US 9))
- GEL-KAYANO 33 (Black/Black - (Women - US 7))
Main Differences for
Half/Full Marathon Racing
Half/Full Marathon Racing
Threshold
Half/Full Marathon Racing
6.0
6.4
Full Comparison
Design
Weight
4.2
4.5
Right Shoe Weight Photo
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Left Shoe Weight Photo
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Weight
303.4 g (10.70 oz)
295.9 g (10.44 oz)
Stack Heights
Stack Height Photo
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Heel Stack Height
38.2 mm
41.5 mm
Forefoot Stack Height
29.7 mm
30.4 mm
Heel-To-Toe Drop
8.5 mm
11.1 mm
Advertised Heel-To-Toe Drop
8.0 mm
8.0 mm
External Shape
3D Model Full Shoe
Preview 3D
Preview 3D
Outsole Heel Width
94 mm (3.7")
95 mm (3.7")
Outsole Arch Width
83 mm (3.3")
82 mm (3.2")
Outsole Forefoot Width
114 mm (4.5")
119 mm (4.7")
Heel Width-To-Stack Ratio
2.46
2.29
Forefoot Width-To-Stack Ratio
3.84
3.91
Internal Shape
3D Model Internal
Preview 3D
Preview 3D
Internal Length
280 mm (11.0")
278 mm (10.9")
Internal Heel Width
69 mm (2.7")
69 mm (2.7")
Internal Forefoot Width
94 mm (3.7")
96 mm (3.8")
Wide Sizing Available
Yes
Yes
Forefoot Fit: Width
9.3
9.3
Forefoot Width Photo
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Ball-Of-Foot TTS Deviation
2.8 mm (0.111")
3.7 mm (0.145")
Toe TTS Deviation
-1.3 mm (-0.052")
0.7 mm (0.027")
Forefoot Fit: Height
7.0
6.6
Forefoot Height Photo
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Toe TTS Deviation
-3.6 mm (-0.142")
-4.1 mm (-0.162")
Arch Fit: Width
8.5
9.8
Arch Fit Photo
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Arch Width TTS Deviation
-2.6 mm (-0.101")
-0.7 mm (-0.026")
Length Fit
10
10
Toe Clearance Photo
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Heel Rocker Geometry
4.5
6.1
Heel Rocker Photo
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Heel Spring
11 mm (0.4")
15 mm (0.6")
Heel Apex Position
6.8%
15.3%
Heel Rocker Angle
28.8°
18.4°
Forefoot Rocker Geometry
6.2
7.8
Forefoot Rocker Photo
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Toe Spring
44 mm (1.7")
55 mm (2.2")
Toe Apex Position
69.4%
62.7%
Forefoot Rocker Angle
26.1°
26.6°
Foam
Primary Foam Picture
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Secondary Foam Picture
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Primary Foam Name
DNA TUNED
FF BLAST MAX
Primary Foam Type
Unknown
POE
Secondary Foam Name
No Secondary Foam
FF BLAST PLUS
Secondary Foam Type
No Secondary Foam
Unknown
Laces
Laces Picture
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Lace Type
Round
Flat
Width
5.0 mm (0.2")
6.0 mm (0.2")
Thickness
3.3 mm (0.1")
1.7 mm (0.1")
Stretch
4.0%
12.0%
Other Features
Other Features Photo
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Tongue Gusset Type
Non-gusseted
Semi-gusseted
Plate
None
None
Performance
Heel Compression Energy Return
1.7
2.3
Heel Compression Video
Heel Energy Return
Preview Graph
Preview Graph
Heel Energy Return
67.2%
68.3%
Forefoot Compression Energy Return
4.2
4.4
Forefoot Compression Video
Forefoot Energy Return
Preview Graph
Preview Graph
Forefoot Energy Return
70.9%
71.1%
Heel Cushioning
7.3
7.8
Heel Cushioning Picture
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Heel Cushioning
Preview Graph
Preview Graph
Energy Absorbed At 550N
2.83 J
3.42 J
Energy Absorbed At 1100N
9.21 J
9.51 J
Energy Absorbed At 1900N
16.99 J
16.87 J
Forefoot Cushioning
7.3
7.6
Forefoot Cushioning Picture
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Forefoot Cushioning
Preview Graph
Preview Graph
Energy Absorbed At 800N
4.28 J
4.58 J
Energy Absorbed At 1300N
7.78 J
8.13 J
Energy Absorbed At 2050N
11.71 J
12.07 J
Heel Firmness
8.9
8.1
Heel Firmness Graph
Preview Graph
Preview Graph
Firmness At 550N
58.5 N/mm
45.7 N/mm
Firmness At 1100N
63.0 N/mm
55.8 N/mm
Firmness At 1900N
83.2 N/mm
76.6 N/mm
Forefoot Firmness
9.1
8.6
Forefoot Firmness Graph
Preview Graph
Preview Graph
Firmness At 800N
68.8 N/mm
62.1 N/mm
Firmness At 1300N
86.3 N/mm
79.4 N/mm
Firmness At 2050N
117 N/mm
109 N/mm
Forefoot Long Run Cushioning
6.5
7.1
Forefoot Long Run Cushioning
Preview Graph
Preview Graph
Energy Absorbed At 10km
7.13 J
7.64 J
Energy Absorbed At 20km
6.94 J
7.49 J
Energy Absorbed At 30km
6.84 J
7.41 J
Energy Absorbed At 40km
6.76 J
7.36 J
Rocker Stiffness
5.5
6.5
Forefoot Rocker Stiffness Video
Forefoot Rocker Stiffness Graph
Preview Graph
Preview Graph
Force To Flatten The Rocker
51 N
71 N
Forefoot Bending Energy Return
4.5
5.1
Forefoot Bending Video
Forefoot Bending Energy Return
Preview Graph
Preview Graph
Forefoot Bending Energy Return
55.2%
57.2%
Forefoot Bending Stiffness
6.3
6.8
Forefoot Bending Resistance Picture
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Forefoot Bending Resistance
Preview Graph
Preview Graph
Forefoot Bending Stiffness
5.9 N/mm
10.4 N/mm
Forefoot Bending Force
324 N
275 N
Heel Compression Depth
5.0
Heel Compression Graph
Preview Graph
Heel Compression At 550N
9.4 mm
Heel Compression At 1100N
17.5 mm
Heel Compression At 1900N
22.8 mm
Forefoot Compression Depth
5.1
Forefoot Compression Graph
Preview Graph
Forefoot Compression At 800N
11.6 mm
Forefoot Compression At 1300N
15.1 mm
Forefoot Compression At 2050N
17.5 mm
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Brooks Glycerin GTS 23
ASICS GEL-KAYANO 33
Comments
Brooks Glycerin GTS 23 vs ASICS GEL-KAYANO 33: Main Discussion
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