Products
Tested using Methodology v0.10
Updated May 21, 2026 04:30 PM
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Amazon
Tested using Methodology v0.12
Updated Jul 02, 2026 02:20 PM
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Amazon
Weight
292.9 g (10.33 oz)
Heel-To-Toe Drop
10.2 mm
Plate
None
Weight
289.1 g (10.20 oz)
Heel-To-Toe Drop
13.6 mm
Plate
None
Our Verdict
Brooks Glycerin 22
Brooks Adrenaline GTS 25
The Brooks Glycerin 22 and the Brooks Adrenaline GTS 25 are two of the brand's best-selling shoes, each targeting slightly different runners. The Adrenaline GTS 25 is a dedicated stability shoe with multiple support features, including a medial post and guide rails, to combat over-pronation. Its firmer midsole further reduces any unsteadiness. The Glycerin 22, meanwhile, is a neutral daily trainer with better cushioning and an overall livelier midsole. The Adrenaline GTS 25 remains a solid choice for beginner runners who feel unsteady in their stride, while the Glycerin 22 is a more comfortable shoe, especially for heel strikers.
Variants
- Glycerin 22 (Almond Peach/London-fog/Almond - (Women - US 7))
- Glycerin 22 (Amparo Blue/Hyper Iris/Yellow - (Women - US 7))
- Adrenaline GTS 25 (Black/Biscuit - (Men - US 9))
- Adrenaline GTS 25 (Black/Black/Ebony - (Men - US 9))
Main Differences for
Half/Full Marathon Racing
Half/Full Marathon Racing
Threshold
Half/Full Marathon Racing
5.7
5.4
Forefoot Energy Return
5.8
2.6
Plate
None
None
Forefoot Long Run Cushioning
5.6
4.7
Full Comparison
Design
Weight
4.7
4.8
Right Shoe Weight Photo
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Left Shoe Weight Photo
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Weight
292.9 g (10.33 oz)
289.1 g (10.20 oz)
Stack Heights
Stack Height Photo
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Heel Stack Height
37.6 mm
40.9 mm
Forefoot Stack Height
27.4 mm
27.3 mm
Heel-To-Toe Drop
10.2 mm
13.6 mm
Advertised Heel-To-Toe Drop
10.0 mm
12.0 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
76 mm (3.0")
77 mm (3.0")
Outsole Forefoot Width
117 mm (4.6")
110 mm (4.3")
Heel Width-To-Stack Ratio
2.47
2.27
Forefoot Width-To-Stack Ratio
4.27
4.03
Internal Shape
3D Model Internal
Preview 3D
Preview 3D
Internal Length
279 mm (11.0")
280 mm (11.0")
Internal Heel Width
66 mm (2.6")
65 mm (2.6")
Internal Forefoot Width
92 mm (3.6")
90 mm (3.5")
Wide Sizing Available
Yes
Yes
Forefoot Fit: Width
9.4
9.4
Forefoot Width Photo
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Ball-Of-Foot TTS Deviation
2.7 mm (0.106")
2.8 mm (0.109")
Toe TTS Deviation
3.3 mm (0.128")
2.2 mm (0.085")
Forefoot Fit: Height
7.0
6.8
Forefoot Height Photo
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Toe TTS Deviation
-3.6 mm (-0.142")
-3.8 mm (-0.149")
Arch Fit: Width
10
9.9
Arch Fit Photo
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Arch Width TTS Deviation
0.5 mm (0.021")
1.1 mm (0.045")
Length Fit
10
10
Toe Clearance Photo
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Heel Rocker Geometry
4.9
Heel Rocker Photo
Heel Spring
16 mm (0.6")
Heel Apex Position
9.3%
Heel Rocker Angle
21.8°
Forefoot Rocker Geometry
4.8
Forefoot Rocker Photo
Toe Spring
36 mm (1.4")
Toe Apex Position
69.1%
Forefoot Rocker Angle
21.8°
Other Features
Other Features Photo
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Tongue Gusset Type
Non-gusseted
Non-gusseted
Plate
None
None
Performance
Heel Compression Energy Return
2.4
1.8
Heel Compression Video
Heel Energy Return
Preview Graph
Preview Graph
Heel Energy Return
68.5%
67.4%
Forefoot Compression Energy Return
5.8
2.6
Forefoot Compression Video
Forefoot Energy Return
Preview Graph
Preview Graph
Forefoot Energy Return
73.1%
69.0%
Heel Cushioning
7.6
7.2
Heel Cushioning Picture
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Heel Cushioning
Preview Graph
Preview Graph
Energy Absorbed At 550N
2.98 J
3.05 J
Energy Absorbed At 1100N
9.68 J
8.96 J
Energy Absorbed At 1900N
17.13 J
16.00 J
Forefoot Cushioning
6.2
5.2
Forefoot Cushioning Picture
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Forefoot Cushioning
Preview Graph
Preview Graph
Energy Absorbed At 800N
3.79 J
3.21 J
Energy Absorbed At 1300N
6.60 J
5.60 J
Energy Absorbed At 2050N
9.81 J
8.34 J
Heel Firmness
5.0
8.8
Heel Firmness
Preview Graph
Heel Firmness Graph
Preview Graph
Firmness At 550N
50.9 N/mm
52.5 N/mm
Firmness At 1100N
100.3 N/mm
61.2 N/mm
Firmness At 1900N
207.9 N/mm
83.2 N/mm
Forefoot Firmness
8.7
9.8
Forefoot Firmness
Preview Graph
Forefoot Firmness Graph
Preview Graph
Firmness At 800N
132.1 N/mm
86.9 N/mm
Firmness At 1300N
256.3 N/mm
112.7 N/mm
Firmness At 2050N
491.4 N/mm
155 N/mm
Forefoot Long Run Cushioning
5.6
4.7
Forefoot Long Run Cushioning
Preview Graph
Preview Graph
Energy Absorbed At 10km
6.18 J
5.24 J
Energy Absorbed At 20km
6.05 J
5.11 J
Energy Absorbed At 30km
6.00 J
5.05 J
Energy Absorbed At 40km
5.96 J
4.99 J
Rocker Stiffness
6.0
Forefoot Rocker Stiffness Video
Forefoot Rocker Stiffness Graph
Preview Graph
Force To Flatten The Rocker
61 N
Forefoot Bending Energy Return
4.3
Forefoot Bending Video
Forefoot Bending Energy Return
Preview Graph
Forefoot Bending Energy Return
54.5%
Forefoot Bending Stiffness
7.0
Forefoot Bending Resistance Picture
Forefoot Bending Resistance
Preview Graph
Forefoot Bending Stiffness
9.7 N/mm
Forefoot Bending Force
315 N
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Brooks Glycerin 22
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Brooks Glycerin 22 vs Brooks Adrenaline GTS 25: Main Discussion
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