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Tested using Methodology v0.12
Updated Sep 24, 2026 03:53 PM
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Tested using Methodology v0.15
Updated Sep 04, 2026 04:32 PM
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Heel Stack Height
40.9 mm
Weight
289.1 g (10.20 oz)
Heel-To-Toe Drop
13.6 mm
Plate
None
Heel Stack Height
39.9 mm
Weight
299.4 g (10.56 oz)
Heel-To-Toe Drop
9.6 mm
Plate
None
Our Verdict
Brooks Adrenaline GTS 25
Brooks Glycerin 23
The Brooks Glycerin 23 is a better shoe than the Brooks Adrenaline GTS 25 for runners with a neutral stride. The Glycerin is much more cushioned and has more energy return, making it the pick for runners who want a plush, comfortable ride for daily training and long runs. The Adrenaline GTS 25 is lighter and adds stability features that guide your foot, so it's the better choice for runners whose feet tend to roll inward and who need extra support.
Variants
- Adrenaline GTS 25 (Black/Biscuit - (Men - US 9))
- Adrenaline GTS 25 (Black/Black/Ebony - (Men - US 9))
- Glycerin 23 (Atlantic Deep/Greymist/Coconut - (Men - US 9))
- Glycerin 23 (Black/Black/Ebony - (Men - US 9))
Main Differences for
Half/Full Marathon Racing
Half/Full Marathon Racing
Threshold
Half/Full Marathon Racing
5.4
6.3
Forefoot Stack Height
27.3 mm
30.3 mm
Forefoot Compression Energy Return
2.6
4.9
Forefoot Long Run Cushioning
4.7
6.3
Forefoot Bending Energy Return
4.3
6.3
Weight
4.8
4.4
Full Comparison
Design
Weight
4.8
4.4
Right Shoe Weight Photo
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Left Shoe Weight Photo
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Weight
289.1 g (10.20 oz)
299.4 g (10.56 oz)
Stack Heights
Stack Height Photo
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Heel Stack Height
40.9 mm
39.9 mm
Forefoot Stack Height
27.3 mm
30.3 mm
Heel-To-Toe Drop
13.6 mm
9.6 mm
Advertised Heel-To-Toe Drop
12.0 mm
8.0 mm
External Shape
3D Model Full Shoe
Preview 3D
Preview 3D
Outsole Heel Width
93 mm (3.7")
93 mm (3.7")
Outsole Arch Width
77 mm (3.0")
77 mm (3.0")
Outsole Forefoot Width
110 mm (4.3")
113 mm (4.5")
Heel Width-To-Stack Ratio
2.27
2.33
Forefoot Width-To-Stack Ratio
4.03
3.72
Internal Shape
3D Model Internal
Preview 3D
Preview 3D
Internal Length
280 mm (11.0")
280 mm (11.0")
Internal Heel Width
65 mm (2.6")
65 mm (2.6")
Internal Forefoot Width
90 mm (3.5")
93 mm (3.7")
Wide Sizing Available
Yes
Yes
Forefoot Fit: Width
9.4
8.2
Forefoot Width Photo
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Ball-Of-Foot TTS Deviation
2.8 mm (0.109")
5.2 mm (0.206")
Toe TTS Deviation
2.2 mm (0.085")
6.9 mm (0.271")
Forefoot Fit: Height
6.8
10
Forefoot Height Photo
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Toe TTS Deviation
-3.8 mm (-0.149")
-0.1 mm (-0.004")
Arch Fit: Width
9.9
7.6
Arch Fit Photo
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Arch Width TTS Deviation
1.1 mm (0.045")
-3.9 mm (-0.154")
Length Fit
10
10
Toe Clearance Photo
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Heel Rocker Geometry
4.9
6.3
Heel Rocker Photo
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Heel Spring
16 mm (0.6")
20 mm (0.8")
Heel Apex Position
9.3%
12.1%
Heel Rocker Angle
21.8°
29.1°
Forefoot Rocker Geometry
4.8
6.3
Forefoot Rocker Photo
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Toe Spring
36 mm (1.4")
44 mm (1.7")
Toe Apex Position
69.1%
66.3%
Forefoot Rocker Angle
21.8°
23.7°
Foam
Primary Foam Picture
Secondary Foam Picture
Primary Foam Name
DNA TUNED
Primary Foam Type
Unknown
Secondary Foam Name
No Secondary Foam
Secondary Foam Type
No Secondary Foam
Laces
Laces Picture
Lace Type
Round
Width
6.0 mm (0.2")
Thickness
3.5 mm (0.1")
Stretch
12.5%
Other Features
Other Features Photo
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Tongue Gusset Type
Non-gusseted
Non-gusseted
Plate
None
None
Performance
Heel Compression Energy Return
1.8
2.2
Heel Compression Video
Heel Energy Return
Preview Graph
Preview Graph
Heel Energy Return
67.4%
68.3%
Forefoot Compression Energy Return
2.6
4.9
Forefoot Compression Video
Forefoot Energy Return
Preview Graph
Preview Graph
Forefoot Energy Return
69.0%
71.7%
Heel Cushioning
7.2
7.7
Heel Cushioning Picture
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Heel Cushioning
Preview Graph
Preview Graph
Energy Absorbed At 550N
3.05 J
3.08 J
Energy Absorbed At 1100N
8.96 J
9.86 J
Energy Absorbed At 1900N
16.00 J
17.27 J
Forefoot Cushioning
5.2
7.1
Forefoot Cushioning Picture
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Forefoot Cushioning
Preview Graph
Preview Graph
Energy Absorbed At 800N
3.21 J
4.36 J
Energy Absorbed At 1300N
5.60 J
7.60 J
Energy Absorbed At 2050N
8.34 J
11.21 J
Heel Firmness
8.8
8.5
Heel Firmness Graph
Preview Graph
Preview Graph
Firmness At 550N
52.5 N/mm
53.2 N/mm
Firmness At 1100N
61.2 N/mm
58.0 N/mm
Firmness At 1900N
83.2 N/mm
78.9 N/mm
Forefoot Firmness
9.8
8.9
Forefoot Firmness Graph
Preview Graph
Preview Graph
Firmness At 800N
86.9 N/mm
64.3 N/mm
Firmness At 1300N
112.7 N/mm
83.3 N/mm
Firmness At 2050N
155 N/mm
115 N/mm
Forefoot Long Run Cushioning
4.7
6.3
Forefoot Long Run Cushioning
Preview Graph
Preview Graph
Energy Absorbed At 10km
5.24 J
6.88 J
Energy Absorbed At 20km
5.11 J
6.73 J
Energy Absorbed At 30km
5.05 J
6.66 J
Energy Absorbed At 40km
4.99 J
6.61 J
Rocker Stiffness
6.0
5.8
Forefoot Rocker Stiffness Video
Forefoot Rocker Stiffness Graph
Preview Graph
Preview Graph
Force To Flatten The Rocker
61 N
57 N
Forefoot Bending Energy Return
4.3
6.3
Forefoot Bending Video
Forefoot Bending Energy Return
Preview Graph
Preview Graph
Forefoot Bending Energy Return
54.5%
61.4%
Forefoot Bending Stiffness
7.0
6.5
Forefoot Bending Resistance Picture
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Forefoot Bending Resistance
Preview Graph
Preview Graph
Forefoot Bending Stiffness
9.7 N/mm
11.0 N/mm
Forefoot Bending Force
315 N
240 N
Heel Compression Depth
5.3
Heel Compression Graph
Preview Graph
Heel Compression At 550N
10.3 mm
Heel Compression At 1100N
19.0 mm
Heel Compression At 1900N
24.1 mm
Forefoot Compression Depth
5.4
Forefoot Compression Graph
Preview Graph
Forefoot Compression At 800N
12.4 mm
Forefoot Compression At 1300N
15.6 mm
Forefoot Compression At 2050N
17.8 mm
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Brooks Adrenaline GTS 25
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Brooks Adrenaline GTS 25 vs Brooks Glycerin 23: Main Discussion
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