Products
Tested using Methodology v0.11
Updated Apr 30, 2026 06:23 PM
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Amazon
Tested using Methodology v0.10
Updated Apr 27, 2026 06:21 PM
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Amazon
Weight
282.3 g (9.96 oz)
Heel-To-Toe Drop
10.9 mm
Plate
None
Weight
299.4 g (10.56 oz)
Heel-To-Toe Drop
9.6 mm
Plate
None
Our Verdict
Brooks Ghost 17
Brooks Glycerin 23
The Brooks Glycerin 23 and Brooks Ghost 17 are two of the Seattle-based brand's most popular daily trainers, and both cater primarily to heel strikers. The Ghost is the firmer shoe, offering less cushioning but better stability. The Glycerin is softer and more plush, but the extra cushioning makes the shoe heavier. Runners who want a more traditional ride, with some ground feel, will likely prefer the Ghost 17. For runners who prioritize comfort, the Glycerin 23 is the better choice.
Variants
- Ghost 17 (Acid Lime/Navy/White - (Men - US 9))
- Ghost 17 (Apricot/Grey/Pink - (Women - US 7))
- Glycerin 23 (Atlantic Deep/Greymist/Coconut - (Men - US 9))
- Glycerin 23 (Black/Black/Ebony - (Men - US 9))
Main Differences for
Marathon Racing
Marathon Racing
Threshold
Marathon Racing
4.3
5.9
Forefoot Stack Height
25.3 mm
30.3 mm
Forefoot Compression Energy Return
2.5
4.9
Heel Stack Height
36.2 mm
39.9 mm
Weight
5.1
4.4
Full Comparison
Design
Weight
5.1
4.4
Right Shoe Weight Photo
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Left Shoe Weight Photo
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Weight
282.3 g (9.96 oz)
299.4 g (10.56 oz)
Stack Heights
Stack Height Photo
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Heel Stack Height
36.2 mm
39.9 mm
Forefoot Stack Height
25.3 mm
30.3 mm
Heel-To-Toe Drop
10.9 mm
9.6 mm
Advertised Heel-To-Toe Drop
10.0 mm
8.0 mm
External Shape
3D Model Full Shoe
Preview 3D
Preview 3D
Outsole Heel Width
91 mm (3.6")
93 mm (3.7")
Outsole Arch Width
75 mm (3.0")
77 mm (3.0")
Outsole Forefoot Width
112 mm (4.4")
113 mm (4.5")
Heel Width-To-Stack Ratio
2.51
2.33
Forefoot Width-To-Stack Ratio
4.43
3.72
Internal Shape
3D Model Internal
Preview 3D
Preview 3D
Internal Length
279 mm (11.0")
280 mm (11.0")
Internal Heel Width
67 mm (2.6")
65 mm (2.6")
Internal Forefoot Width
91 mm (3.6")
93 mm (3.7")
Wide Sizing Available
Yes
Yes
Forefoot Fit: Width
9.9
8.2
Forefoot Width Photo
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Ball-Of-Foot TTS Deviation
0.1 mm (0.004")
5.2 mm (0.206")
Toe TTS Deviation
-0.8 mm (-0.032")
6.9 mm (0.271")
Forefoot Fit: Height
7.7
10
Forefoot Height Photo
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Toe TTS Deviation
-2.7 mm (-0.108")
-0.1 mm (-0.004")
Arch Fit: Width
6.1
7.6
Arch Fit Photo
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Arch Width TTS Deviation
-5.7 mm (-0.224")
-3.9 mm (-0.154")
Length Fit
10
10
Toe Clearance Photo
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Heel Rocker Geometry
6.9
Heel Rocker Photo
Heel Spring
18 mm (0.7")
Heel Apex Position
15.3%
Heel Rocker Angle
21.8°
Forefoot Rocker Geometry
5.7
Forefoot Rocker Photo
Toe Spring
40 mm (1.6")
Toe Apex Position
66.1%
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
1.5
2.2
Heel Compression Video
Heel Energy Return
Preview Graph
Preview Graph
Heel Energy Return
66.5%
68.3%
Forefoot Compression Energy Return
2.5
4.9
Forefoot Compression Video
Forefoot Energy Return
Preview Graph
Preview Graph
Forefoot Energy Return
68.8%
71.7%
Heel Cushioning
7.0
7.7
Heel Cushioning Picture
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Heel Cushioning
Preview Graph
Preview Graph
Energy Absorbed At 550N
2.79 J
3.08 J
Energy Absorbed At 1100N
8.76 J
9.86 J
Energy Absorbed At 1900N
16.23 J
17.27 J
Forefoot Cushioning
5.4
7.1
Forefoot Cushioning Picture
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Forefoot Cushioning
Preview Graph
Preview Graph
Energy Absorbed At 800N
3.32 J
4.36 J
Energy Absorbed At 1300N
5.84 J
7.60 J
Energy Absorbed At 2050N
8.94 J
11.21 J
Heel Firmness
5.4
4.8
Heel Firmness
Preview Graph
Preview Graph
Firmness At 550N
58.6 N/mm
47.3 N/mm
Firmness At 1100N
101.4 N/mm
106.4 N/mm
Firmness At 1900N
206.3 N/mm
198.8 N/mm
Forefoot Firmness
8.9
8.1
Forefoot Firmness
Preview Graph
Preview Graph
Firmness At 800N
147.9 N/mm
111.3 N/mm
Firmness At 1300N
280.5 N/mm
220.5 N/mm
Firmness At 2050N
472.4 N/mm
426.1 N/mm
Forefoot Long Run Cushioning
4.9
6.3
Forefoot Long Run Cushioning
Preview Graph
Preview Graph
Energy Absorbed At 10km
5.41 J
6.88 J
Energy Absorbed At 20km
5.28 J
6.73 J
Energy Absorbed At 30km
5.23 J
6.66 J
Energy Absorbed At 40km
5.21 J
6.61 J
Rocker Stiffness
6.3
Forefoot Rocker Stiffness Video
Forefoot Rocker Stiffness Graph
Preview Graph
Force To Flatten The Rocker
68 N
Forefoot Bending Energy Return
4.3
Forefoot Bending Video
Forefoot Bending Energy Return
Preview Graph
Forefoot Bending Energy Return
54.3%
Forefoot Bending Stiffness
6.7
Forefoot Bending Resistance Picture
Forefoot Bending Resistance
Preview Graph
Forefoot Bending Stiffness
7.1 N/mm
Forefoot Bending Force
348 N
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Brooks Ghost 17
Brooks Glycerin 23
Comments
Brooks Ghost 17 vs Brooks Glycerin 23: Main Discussion
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