Products
Tested using Methodology v0.15
Updated Sep 04, 2026 04:09 PM
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Amazon
Tested using Methodology v0.15
Updated Sep 04, 2026 04:32 PM
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Amazon
Heel Stack Height
36.6 mm
Weight
283.3 g (9.99 oz)
Heel-To-Toe Drop
10.8 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 Ghost 18
Brooks Glycerin 23
The Brooks Glycerin 23 is a better choice than the Brooks Ghost 18 for most runners. It's noticeably more cushioned, especially under the forefoot, and has a roomier toe box, making it the pick for long runs and runners who want a plusher feel. The Ghost 18 is lighter, a touch more stable, and cheaper, so it's the better option for runners who want a simple, dependable daily trainer that feels a bit quicker when they pick up the pace.
Variants
- Ghost 18 (Black/Black/Ebony - (Men - US 9))
- Ghost 18 (Black/Black/Ebony - (Women - US 7))
- 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
25.8 mm
30.3 mm
Heel Stack Height
36.6 mm
39.9 mm
Weight
5.1
4.4
Forefoot Long Run Cushioning
5.1
6.3
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
283.3 g (9.99 oz)
299.4 g (10.56 oz)
Stack Heights
Stack Height Photo
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Heel Stack Height
36.6 mm
39.9 mm
Forefoot Stack Height
25.8 mm
30.3 mm
Heel-To-Toe Drop
10.8 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
92 mm (3.6")
93 mm (3.7")
Outsole Arch Width
77 mm (3.0")
77 mm (3.0")
Outsole Forefoot Width
115 mm (4.5")
113 mm (4.5")
Heel Width-To-Stack Ratio
2.51
2.33
Forefoot Width-To-Stack Ratio
4.46
3.72
Internal Shape
3D Model Internal
Preview 3D
Preview 3D
Internal Length
282 mm (11.1")
280 mm (11.0")
Internal Heel Width
68 mm (2.7")
65 mm (2.6")
Internal Forefoot Width
95 mm (3.7")
93 mm (3.7")
Wide Sizing Available
Yes
Yes
Forefoot Fit: Width
9.3
8.2
Forefoot Width Photo
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Ball-Of-Foot TTS Deviation
3.5 mm (0.139")
5.2 mm (0.206")
Toe TTS Deviation
0.2 mm (0.007")
6.9 mm (0.271")
Forefoot Fit: Height
6.8
10
Forefoot Height Photo
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Toe TTS Deviation
-3.8 mm (-0.150")
-0.1 mm (-0.004")
Arch Fit: Width
9.0
7.6
Arch Fit Photo
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Arch Width TTS Deviation
-1.9 mm (-0.074")
-3.9 mm (-0.154")
Length Fit
10
10
Toe Clearance Photo
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Heel Rocker Geometry
6.5
6.3
Heel Rocker Photo
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Heel Spring
17 mm (0.7")
20 mm (0.8")
Heel Apex Position
14.0%
12.1%
Heel Rocker Angle
22.5°
29.1°
Forefoot Rocker Geometry
6.1
6.3
Forefoot Rocker Photo
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Toe Spring
43 mm (1.7")
44 mm (1.7")
Toe Apex Position
69.2%
66.3%
Forefoot Rocker Angle
25.5°
23.7°
Foam
Primary Foam Picture
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Secondary Foam Picture
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Primary Foam Name
DNA LOFT V3
DNA TUNED
Primary Foam Type
EVA
Unknown
Secondary Foam Name
No Secondary Foam
No Secondary Foam
Secondary Foam Type
No Secondary Foam
No Secondary Foam
Laces
Laces Picture
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Lace Type
Round
Round
Width
5.0 mm (0.2")
6.0 mm (0.2")
Thickness
3.0 mm (0.1")
3.5 mm (0.1")
Stretch
8.5%
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
3.0
2.2
Heel Compression Video
Heel Energy Return
Preview Graph
Preview Graph
Heel Energy Return
69.5%
68.3%
Forefoot Compression Energy Return
4.8
4.9
Forefoot Compression Video
Forefoot Energy Return
Preview Graph
Preview Graph
Forefoot Energy Return
71.6%
71.7%
Heel Cushioning
7.7
7.7
Heel Cushioning Picture
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Heel Cushioning
Preview Graph
Preview Graph
Energy Absorbed At 550N
3.36 J
3.08 J
Energy Absorbed At 1100N
9.48 J
9.86 J
Energy Absorbed At 1900N
16.47 J
17.27 J
Forefoot Cushioning
5.6
7.1
Forefoot Cushioning Picture
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Forefoot Cushioning
Preview Graph
Preview Graph
Energy Absorbed At 800N
3.52 J
4.36 J
Energy Absorbed At 1300N
5.96 J
7.60 J
Energy Absorbed At 2050N
8.82 J
11.21 J
Heel Firmness
8.3
8.5
Heel Firmness Graph
Preview Graph
Preview Graph
Firmness At 550N
47.3 N/mm
53.2 N/mm
Firmness At 1100N
56.9 N/mm
58.0 N/mm
Firmness At 1900N
78.6 N/mm
78.9 N/mm
Forefoot Firmness
9.5
8.9
Forefoot Firmness Graph
Preview Graph
Preview Graph
Firmness At 800N
77.0 N/mm
64.3 N/mm
Firmness At 1300N
101.8 N/mm
83.3 N/mm
Firmness At 2050N
141 N/mm
115 N/mm
Forefoot Long Run Cushioning
5.1
6.3
Forefoot Long Run Cushioning
Preview Graph
Preview Graph
Energy Absorbed At 10km
5.71 J
6.88 J
Energy Absorbed At 20km
5.54 J
6.73 J
Energy Absorbed At 30km
5.48 J
6.66 J
Energy Absorbed At 40km
5.42 J
6.61 J
Rocker Stiffness
5.9
5.8
Forefoot Rocker Stiffness Video
Forefoot Rocker Stiffness Graph
Preview Graph
Preview Graph
Force To Flatten The Rocker
60 N
57 N
Forefoot Bending Energy Return
5.7
6.3
Forefoot Bending Video
Forefoot Bending Energy Return
Preview Graph
Preview Graph
Forefoot Bending Energy Return
59.2%
61.4%
Forefoot Bending Stiffness
6.1
6.5
Forefoot Bending Resistance Picture
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Forefoot Bending Resistance
Preview Graph
Preview Graph
Forefoot Bending Stiffness
6.9 N/mm
11.0 N/mm
Forefoot Bending Force
264 N
240 N
Heel Compression Depth
5.6
5.3
Heel Compression Graph
Preview Graph
Preview Graph
Heel Compression At 550N
11.6 mm
10.3 mm
Heel Compression At 1100N
19.3 mm
19.0 mm
Heel Compression At 1900N
24.2 mm
24.1 mm
Forefoot Compression Depth
4.4
5.4
Forefoot Compression Graph
Preview Graph
Preview Graph
Forefoot Compression At 800N
10.4 mm
12.4 mm
Forefoot Compression At 1300N
12.8 mm
15.6 mm
Forefoot Compression At 2050N
14.5 mm
17.8 mm
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Brooks Ghost 18
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Brooks Ghost 18 vs Brooks Glycerin 23: Main Discussion
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