Notice: Your browser is not supported or outdated so some features of the site might not be available.
Notice: We're just getting warmed up—if you're passionate about this, we're hiring!
- Table of Contents
- Top
- Main Differences
- Design
- Performance
- Comments
Saucony Endorphin Speed 4 vs adidas Adizero Boston 12
Side-by-Side Comparison
Products
Saucony Endorphin Speed 4
adidas Adizero Boston 12
Tested using Methodology v0.8
Updated Apr 23, 2025 02:28 PM
SEE PRICE
Amazon.comTested using Methodology v0.8
Updated Apr 15, 2025 02:53 PM
SEE PRICE
Amazon.com
Weight240.6 g (8.49 oz)
Heel-To-Toe Drop6.4 mm
PlatePlastic
Weight265.3 g (9.36 oz)
Heel-To-Toe Drop7.7 mm
PlateFiberglass Rods
Variants
- Endorphin Speed 4 (Black - (Men - US 9))
- Endorphin Speed 4 (Black - (Women - US 7))
- Endorphin Speed 4 (Citron/Navy - (Men - US 9))
- Endorphin Speed 4 (Dusk/Peel - (Women - US 7))
- Endorphin Speed 4 (Ice Melt - (Women - US 7))
- Endorphin Speed 4 (Lupine/Cavern - (Women - US 7))
- Endorphin Speed 4 (Moon/Plum - (Women - US 7))
- Endorphin Speed 4 (Navy/Fuchsia - (Women - US 7))
- Endorphin Speed 4 (Navy/Pepper - (Men - US 9))
- Endorphin Speed 4 (Navy/Spice - (Men - US 9))
- Endorphin Speed 4 (Olivine - (Men - US 9))
- Endorphin Speed 4 (Pepper/Navy - (Men - US 9))
- Endorphin Speed 4 (Shadow - (Men - US 9))
- Endorphin Speed 4 (Shadow - (Women - US 7))
- Endorphin Speed 4 (Sunny/Ballad - (Women - US 7))
- Endorphin Speed 4 (Synergy/Aqua - (Men - US 9))
- Endorphin Speed 4 (Synergy/Aqua - (Women - US 7))
- Endorphin Speed 4 (ViZiBlue/Navy - (Men - US 9))
- Endorphin Speed 4 (ViZiBlue/Silver - (Women - US 7))
- Endorphin Speed 4 (White/Gold - (Men - US 9))
- Endorphin Speed 4 (White/Gold - (Women - US 7))
- Endorphin Speed 4 (White/Gum - (Men - US 9))
- Endorphin Speed 4 (White/Gum - (Women - US 7))
- Endorphin Speed 4 (White/Navy - (Men - US 9))
- Endorphin Speed 4 (White/Navy - (Women - US 7))
- Endorphin Speed 4 (White/Peel - (Men - US 9))
- Endorphin Speed 4 (White/Sunny - (Women - US 7))
- Endorphin Speed 4 (White/ViZiBlue - (Men - US 9))
- Endorphin Speed 4 (White/ViZiBlue - (Women - US 7))
- Endorphin Speed 4 (White/ViZiOrange - (Men - US 9))
- Endorphin Speed 4 (White/Violet - (Women - US 7))
- Adizero Boston 12 (Black/White/Carbon - (Men - US 9))
- Adizero Boston 12 (Black/Zero Metallic/Spark - (Men - US 9))
- Adizero Boston 12 (Black/Zero Metallic/Spark - (Women - US 7))
- Adizero Boston 12 (Blue Spark/Zero Metallic/Cobalt Blue - (Women - US 7))
- Adizero Boston 12 (Cloud White/Aurora Met./Solar Red - (Men - US 9))
- Adizero Boston 12 (Cobalt Blue/Zero Metallic/Lucid Blue - (Men - US 9))
- Adizero Boston 12 (Core Black/Cloud White/Carbon - (Women - US 7))
- Adizero Boston 12 (Dash Grey/Lucid Red/Lucid Lemon - (Men - US 9))
- Adizero Boston 12 (Preloved Ink/Zero Metallic/Aurora Ink - (Women - US 7))
- Adizero Boston 12 (Sandy Pink/Aurora Met./Solar Red - (Women - US 7))
- Adizero Boston 12 (Silver Violet/Cloud White/Silver Daw - (Women - US 7))
- Adizero Boston 12 (White/Dark Blue/Pure Ruby - (Men - US 9))
Our Verdict
Saucony Endorphin Speed 4
adidas Adizero Boston 12
The Saucony Endorphin Speed 4 and the adidas Adizero Boston 12 are both versatile, stable daily trainers but differ notably in feel and cushioning. The Saucony provides more cushioning, a softer midsole, and better energy return, making it smoother and more responsive for faster workouts or races. It's also lighter than the adidas, making it a more versatile partner for daily runs.
Main Differences forMarathon Racing
Marathon Racing
Threshold
Marathon Racing
7.3
6.7
Weight
6.7
5.7
Heel Energy Return
8.1
5.9
Forefoot Energy Return
8.2
7.3
Plate
Plastic
Fiberglass Rods
Full Comparison
Design
Weight
6.7
5.7
Right Shoe Weight Photo
Left Shoe Weight Photo
Weight
240.6 g (8.49 oz)
265.3 g (9.36 oz)
Stack Heights
Stack Height Photo
Heel Stack Height
37.2 mm
36.6 mm
Forefoot Stack Height
30.8 mm
28.9 mm
Heel-To-Toe Drop
6.4 mm
7.7 mm
Advertised Heel-To-Toe Drop
8.0 mm
7.0 mm
External Shape
3D Model Full Shoe
Outsole Heel Width
92 mm (3.6")
83 mm (3.2")
Outsole Arch Width
67 mm (2.6")
68 mm (2.7")
Outsole Forefoot Width
113 mm (4.5")
114 mm (4.5")
Internal Shape
3D Model Internal
Internal Length
275 mm (10.8")
272 mm (10.7")
Internal Heel Width
59 mm (2.3")
61 mm (2.4")
Internal Forefoot Width
91 mm (3.6")
93 mm (3.7")
Other Features
Other Features Photo
Tongue Gusset Type
Fully-gusseted
Semi-gusseted
Plate
Plastic
Fiberglass Rods
Performance
Heel Energy Return
8.1
5.9
Heel Compression Video
Heel Energy Return
Heel Energy Return
86.1%
77.8%
Forefoot Energy Return
8.2
7.3
Forefoot Compression Video
Forefoot Energy Return
Forefoot Energy Return
87.0%
82.1%
Heel Cushioning
6.4
5.8
Heel Cushioning Picture
Heel Cushioning
Energy Absorbed At 300N
0.90 J
0.89 J
Energy Absorbed At 600N
3.22 J
2.86 J
Energy Absorbed At 900N
6.05 J
5.26 J
Forefoot Cushioning
6.2
4.9
Forefoot Cushioning Picture
Forefoot Cushioning
Energy Absorbed At 300N
0.85 J
0.77 J
Energy Absorbed At 600N
2.51 J
2.36 J
Energy Absorbed At 900N
4.38 J
4.27 J
Heel Firmness
7.1
8.2
Heel Firmness
Average Firmness 0 To 300N
47.7 N/mm
48.8 N/mm
Average Firmness 300 To 600N
57.8 N/mm
68.1 N/mm
Average Firmness 600 To 900N
79.5 N/mm
94.1 N/mm
Forefoot Firmness
9.0
9.1
Forefoot Firmness
Average Firmness 0 To 300N
51.0 N/mm
55.4 N/mm
Average Firmness 300 To 600N
80.4 N/mm
84.2 N/mm
Average Firmness 600 To 900N
120.4 N/mm
118.4 N/mm
You have 10/10 free reviews left
To access
and
Become an Insider
unlimited full product reviews,
product prices
other exclusive site features
Saucony Endorphin Speed 4
adidas Adizero Boston 12
Comments
Saucony Endorphin Speed 4 vs adidas Adizero Boston 12: Main Discussion
What do you think of these products? Let us know below.
Looking for a personalized buying advice from the RTINGS.com experts? Insiders have direct access to buying advice on our insider forum.