Products
Tested using Methodology v0.13
Updated Jun 30, 2026 08:26 PM
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RoadRunnerSports.com
Tested using Methodology v0.13
Updated Jul 17, 2026 03:41 PM
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Amazon
Weight
282.6 g (9.97 oz)
Heel-To-Toe Drop
10.7 mm
Plate
None
Weight
283.3 g (9.99 oz)
Heel-To-Toe Drop
10.8 mm
Plate
None
Our Verdict
Nike Pegasus 42
Brooks Ghost 18
The Brooks Ghost 18 and the Nike Pegasus 42 are classic daily trainers with more similarities than differences. Both are dependable workhorses that offer good stability and prioritize consistency over bounce. The Ghost 18 offers better cushioning overall, while the Pegasus 42 has a narrower toe box and delivers a firmer ride, especially through the heel. Neither shoe is particularly exciting underfoot, but both are reliable options for soaking up daily miles.
Variants
- Pegasus 42 (Black/Black/Anthracite - (Men - US 9))
- Pegasus 42 (Black/Black/Anthracite - (Women - US 7))
- Ghost 18 (Black/Black/Ebony - (Men - US 9))
- Ghost 18 (Black/Black/Ebony - (Women - US 7))
Main Differences for
Half/Full Marathon Racing
Half/Full Marathon Racing
Threshold
Half/Full Marathon Racing
5.6
5.4
Heel Stack Height
37.4 mm
36.6 mm
Forefoot Stack Height
26.7 mm
25.8 mm
Forefoot Bending Energy Return
4.6
5.7
Full Comparison
Design
Weight
5.1
5.1
Right Shoe Weight Photo
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Left Shoe Weight Photo
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Weight
282.6 g (9.97 oz)
283.3 g (9.99 oz)
Stack Heights
Stack Height Photo
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Heel Stack Height
37.4 mm
36.6 mm
Forefoot Stack Height
26.7 mm
25.8 mm
Heel-To-Toe Drop
10.7 mm
10.8 mm
Advertised Heel-To-Toe Drop
10.0 mm
10.0 mm
External Shape
3D Model Full Shoe
Preview 3D
Preview 3D
Outsole Heel Width
89 mm (3.5")
92 mm (3.6")
Outsole Arch Width
63 mm (2.5")
77 mm (3.0")
Outsole Forefoot Width
111 mm (4.4")
115 mm (4.5")
Heel Width-To-Stack Ratio
2.37
2.51
Forefoot Width-To-Stack Ratio
4.15
4.46
Internal Shape
3D Model Internal
Preview 3D
Preview 3D
Internal Length
281 mm (11.1")
282 mm (11.1")
Internal Heel Width
63 mm (2.5")
68 mm (2.7")
Internal Forefoot Width
92 mm (3.6")
95 mm (3.7")
Wide Sizing Available
Yes
Yes
Forefoot Fit: Width
8.6
9.3
Forefoot Width Photo
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Ball-Of-Foot TTS Deviation
3.3 mm (0.131")
3.5 mm (0.139")
Toe TTS Deviation
-3.3 mm (-0.131")
0.2 mm (0.007")
Forefoot Fit: Height
4.9
6.8
Forefoot Height Photo
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Toe TTS Deviation
-6.0 mm (-0.234")
-3.8 mm (-0.150")
Arch Fit: Width
9.6
9.0
Arch Fit Photo
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Arch Width TTS Deviation
-1.0 mm (-0.039")
-1.9 mm (-0.074")
Length Fit
10
10
Toe Clearance Photo
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Heel Rocker Geometry
7.4
6.5
Heel Rocker Photo
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Heel Spring
20 mm (0.8")
17 mm (0.7")
Heel Apex Position
19.0%
14.0%
Heel Rocker Angle
20.0°
22.5°
Forefoot Rocker Geometry
5.8
6.1
Forefoot Rocker Photo
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Toe Spring
40 mm (1.6")
43 mm (1.7")
Toe Apex Position
62.1%
69.2%
Forefoot Rocker Angle
20.0°
25.5°
Foam
Primary Foam Picture
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Secondary Foam Picture
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Primary Foam Name
ReactX
DNA LOFT V3
Primary Foam Type
TPEE
EVA
Secondary Foam Name
N/A
N/A
Secondary Foam Type
N/A
N/A
Other Features
Other Features Photo
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Tongue Gusset Type
Fully-gusseted
Non-gusseted
Plate
None
None
Performance
Heel Compression Energy Return
3.8
3.0
Heel Compression Video
Heel Energy Return
Preview Graph
Preview Graph
Heel Energy Return
70.4%
69.5%
Forefoot Compression Energy Return
5.0
4.8
Forefoot Compression Video
Forefoot Energy Return
Preview Graph
Preview Graph
Forefoot Energy Return
71.8%
71.6%
Heel Cushioning
6.7
7.7
Heel Cushioning Picture
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Heel Cushioning
Preview Graph
Preview Graph
Energy Absorbed At 550N
3.07 J
3.36 J
Energy Absorbed At 1100N
8.42 J
9.48 J
Energy Absorbed At 1900N
14.14 J
16.47 J
Forefoot Cushioning
5.3
5.6
Forefoot Cushioning Picture
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Forefoot Cushioning
Preview Graph
Preview Graph
Energy Absorbed At 800N
3.60 J
3.52 J
Energy Absorbed At 1300N
5.69 J
5.96 J
Energy Absorbed At 2050N
7.87 J
8.82 J
Heel Firmness
8.7
8.3
Heel Firmness Graph
Preview Graph
Preview Graph
Firmness At 550N
48.3 N/mm
47.3 N/mm
Firmness At 1100N
60.6 N/mm
56.9 N/mm
Firmness At 1900N
85.9 N/mm
78.6 N/mm
Forefoot Firmness
9.8
9.5
Forefoot Firmness Graph
Preview Graph
Preview Graph
Firmness At 800N
84.0 N/mm
77.0 N/mm
Firmness At 1300N
112.3 N/mm
101.8 N/mm
Firmness At 2050N
159 N/mm
141 N/mm
Forefoot Long Run Cushioning
4.8
5.1
Forefoot Long Run Cushioning
Preview Graph
Preview Graph
Energy Absorbed At 10km
5.28 J
5.71 J
Energy Absorbed At 20km
5.14 J
5.54 J
Energy Absorbed At 30km
5.07 J
5.48 J
Energy Absorbed At 40km
5.02 J
5.42 J
Rocker Stiffness
5.0
5.9
Forefoot Rocker Stiffness Video
Forefoot Rocker Stiffness Graph
Preview Graph
Preview Graph
Force To Flatten The Rocker
42 N
60 N
Forefoot Bending Energy Return
4.6
5.7
Forefoot Bending Video
Forefoot Bending Energy Return
Preview Graph
Preview Graph
Forefoot Bending Energy Return
55.5%
59.2%
Forefoot Bending Stiffness
7.1
6.1
Forefoot Bending Resistance Picture
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Forefoot Bending Resistance
Preview Graph
Preview Graph
Forefoot Bending Stiffness
12.5 N/mm
6.9 N/mm
Forefoot Bending Force
278 N
264 N
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Nike Pegasus 42
Brooks Ghost 18
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Nike Pegasus 42 vs Brooks Ghost 18: Main Discussion
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