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Tested using Methodology v0.16
Updated Sep 22, 2026 11:39 PM
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Tested using Methodology v0.16
Updated Sep 17, 2026 04:19 PM
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RoadRunnerSports.com
Heel Stack Height
40.2 mm
Weight
242.0 g (8.54 oz)
Heel-To-Toe Drop
7.3 mm
Plate
None
Heel Stack Height
38.8 mm
Weight
218.0 g (7.69 oz)
Heel-To-Toe Drop
8.4 mm
Plate
None
Our Verdict
Saucony Endorphin Azura
Topo Specter 3
The Topo Specter 3 is a better choice than the Saucony Endorphin Azura if you want a lively, bouncy ride. It's lighter, softer, and more energetic, with a roomy toe box. The Saucony is firmer and much more stable, with a curved sole that carries you through each stride, making it the more trustworthy pick.
Variants
- Endorphin Azura (Black/Aqua - (Women - US 7))
- Endorphin Azura (Black/White - (Men - US 9))
- Specter 3 (White/Sky - (Men - US 9))
- Specter 3 (White/Teal - (Women - US 7))
Main Differences for
Half/Full Marathon Racing
Half/Full Marathon Racing
Threshold
Half/Full Marathon Racing
7.9
8.0
Weight
6.7
7.6
Full Comparison
Design
Weight
6.7
7.6
Right Shoe Weight Photo
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Left Shoe Weight Photo
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Weight
242.0 g (8.54 oz)
218.0 g (7.69 oz)
Stack Heights
Stack Height Photo
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Heel Stack Height
40.2 mm
38.8 mm
Forefoot Stack Height
32.9 mm
30.4 mm
Heel-To-Toe Drop
7.3 mm
8.4 mm
Advertised Heel-To-Toe Drop
8.0 mm
5.0 mm
External Shape
3D Model Full Shoe
Preview 3D
Preview 3D
Outsole Heel Width
94 mm (3.7")
90 mm (3.5")
Outsole Arch Width
70 mm (2.8")
71 mm (2.8")
Outsole Forefoot Width
116 mm (4.6")
116 mm (4.6")
Heel Width-To-Stack Ratio
2.34
2.32
Forefoot Width-To-Stack Ratio
3.53
3.82
Internal Shape
3D Model Internal
Preview 3D
Preview 3D
Internal Length
278 mm (10.9")
278 mm (10.9")
Internal Heel Width
65 mm (2.6")
70 mm (2.8")
Internal Forefoot Width
93 mm (3.7")
98 mm (3.9")
Wide Sizing Available
No
No
Forefoot Fit: Width
9.4
7.7
Forefoot Width Photo
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Ball-Of-Foot TTS Deviation
0.2 mm (0.007")
5.5 mm (0.216")
Toe TTS Deviation
-2.7 mm (-0.104")
9.9 mm (0.391")
Forefoot Fit: Height
10
10
Forefoot Height Photo
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Toe TTS Deviation
1.0 mm (0.040")
1.6 mm (0.064")
Arch Fit: Width
9.7
9.9
Arch Fit Photo
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Arch Width TTS Deviation
2.8 mm (0.108")
1.6 mm (0.065")
Length Fit
10
10
Toe Clearance Photo
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Heel Rocker Geometry
8.3
8.3
Heel Rocker Photo
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Heel Spring
29 mm (1.1")
29 mm (1.1")
Heel Apex Position
19.9%
22.8%
Heel Rocker Angle
25.8°
23.7°
Forefoot Rocker Geometry
6.6
8.2
Forefoot Rocker Photo
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Toe Spring
47 mm (1.9")
60 mm (2.4")
Toe Apex Position
70.8%
58.6%
Forefoot Rocker Angle
28.1°
26.6°
Foam
Primary Foam Picture
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Secondary Foam Picture
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Primary Foam Name
PWRRUN PB
RevFoam
Primary Foam Type
PEBA
A-TPU
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
Flat
Flat
Width
6.0 mm (0.2")
6.0 mm (0.2")
Thickness
1.9 mm (0.1")
2.2 mm (0.1")
Stretch
27.5%
6.5%
Breathability
7.5
7.5
Breathability Video
Upper Breathability
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Upper Microscope Photo
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Time-To-Dry
5.7
6.1
Time-To-Dry Timelapse
Time-To-Dry Graph
Preview Graph
Preview Graph
Time To 30% Dry
8.8 hrs
8.9 hrs
Time To 70% Dry
23.3 hrs
21.7 hrs
Time To Dry
33.4 hrs
29.6 hrs
Water Absorption
8.0
7.3
Dry Weight Photo
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Wet Weight Photo
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Water Absorbed
38.8%
43.3%
Other Features
Other Features Photo
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Tongue Gusset Type
Semi-gusseted
Non-gusseted
Plate
None
None
Performance
Heel Compression Energy Return
8.0
8.7
Heel Compression Video
Heel Energy Return
Preview Graph
Preview Graph
Heel Energy Return
80.9%
85.6%
Forefoot Compression Energy Return
8.3
9.0
Forefoot Compression Video
Forefoot Energy Return
Preview Graph
Preview Graph
Forefoot Energy Return
82.8%
88.3%
Heel Cushioning
8.3
8.7
Heel Cushioning Picture
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Heel Cushioning
Preview Graph
Preview Graph
Energy Absorbed At 550N
3.26 J
4.47 J
Energy Absorbed At 1100N
10.55 J
10.63 J
Energy Absorbed At 1900N
19.04 J
16.85 J
Forefoot Cushioning
8.6
8.5
Forefoot Cushioning Picture
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Forefoot Cushioning
Preview Graph
Preview Graph
Energy Absorbed At 800N
5.09 J
5.82 J
Energy Absorbed At 1300N
9.59 J
9.46 J
Energy Absorbed At 2050N
14.61 J
13.19 J
Heel Firmness
7.3
5.7
Heel Firmness Graph
Preview Graph
Preview Graph
Firmness At 550N
44.7 N/mm
33.3 N/mm
Firmness At 1100N
51.3 N/mm
45.1 N/mm
Firmness At 1900N
69.5 N/mm
66.2 N/mm
Forefoot Firmness
7.5
4.7
Forefoot Firmness Graph
Preview Graph
Preview Graph
Firmness At 800N
56.7 N/mm
43.0 N/mm
Firmness At 1300N
70.2 N/mm
58.5 N/mm
Firmness At 2050N
95 N/mm
84 N/mm
Forefoot Long Run Cushioning
8.1
8.2
Forefoot Long Run Cushioning
Preview Graph
Preview Graph
Energy Absorbed At 10km
8.97 J
9.14 J
Energy Absorbed At 20km
8.77 J
8.94 J
Energy Absorbed At 30km
8.63 J
8.82 J
Energy Absorbed At 40km
8.53 J
8.73 J
Rocker Stiffness
7.7
4.7
Forefoot Rocker Stiffness Video
Forefoot Rocker Stiffness Graph
Preview Graph
Preview Graph
Force To Flatten The Rocker
107 N
39 N
Forefoot Bending Energy Return
7.8
8.5
Forefoot Bending Video
Forefoot Bending Energy Return
Preview Graph
Preview Graph
Forefoot Bending Energy Return
69.9%
75.9%
Forefoot Bending Stiffness
8.3
6.3
Forefoot Bending Resistance Picture
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Forefoot Bending Resistance
Preview Graph
Preview Graph
Forefoot Bending Stiffness
19.5 N/mm
12.3 N/mm
Forefoot Bending Force
366 N
215 N
Heel Compression Depth
6.2
7.3
Heel Compression Graph
Preview Graph
Preview Graph
Heel Compression At 550N
12.3 mm
16.5 mm
Heel Compression At 1100N
21.4 mm
24.4 mm
Heel Compression At 1900N
27.3 mm
28.7 mm
Forefoot Compression Depth
6.3
7.6
Forefoot Compression Graph
Preview Graph
Preview Graph
Forefoot Compression At 800N
14.1 mm
18.6 mm
Forefoot Compression At 1300N
18.5 mm
22.2 mm
Forefoot Compression At 2050N
21.6 mm
24.5 mm
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Saucony Endorphin Azura
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Saucony Endorphin Azura vs Topo Specter 3: Main Discussion
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