Saucony Endorphin Trainer  Running Shoe Review

Reviewed Nov 19, 2025 at 09:01am
Tested using Methodology v0.8.1 
Saucony Endorphin Trainer
7.1
Marathon Racing 
7.0
5K/10K Racing 
5.2
Energy Return 
8.3
Cushioning 
8.0
Lateral Stability 
 0

We've tested these running shoes to expand our database and allow users to compare results to help with their buying decisions. We don't expect to write a full review, but if you have any questions about this product, please let us know!

Our Verdict

7.1
Marathon Racing 
7.0
5K/10K Racing 
5.2
Energy Return 
8.3
Cushioning 
8.0
Lateral Stability 
  • 7.1
    Marathon Racing
  • 7.0
    5K/10K Racing

  • Performance Usages

  • 5.2
    Energy Return
  • 8.3
    Cushioning
  • 8.0
    Lateral Stability
  • Changelog

    1.  Updated Nov 19, 2025: Review published.
    2.  Updated Nov 11, 2025: Early access published.
    3.  Updated May 13, 2025: Our testers have started testing this product.
    How We Test Running Shoes
    How We Test Running Shoes

    We've recently started buying and testing running shoes with a very data-oriented approach. While we're just getting started, our methodology already has dozens of tests to help you make the right purchasing decision for your needs. Not only do we use high-end equipment to gather objective data, but we also order multiple sizes of the same shoes for team members to be able to log in miles. This real-world testing is done at various paces and conditions, and with different types of workouts, to cover all the bases. This allows us to verify our results and ensure they align with what you might feel with a specific pair.

    Test Results

    perceptual testing image
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    RATINGS
    Category:
    All
    Design
    5.3
    Weight
    Weight
    278.5 g (9.82 oz)
    Stack Heights
    Heel Stack Height
    40.2 mm
    Forefoot Stack Height
    31.7 mm
    Heel-To-Toe Drop
    8.5 mm
    Advertised Heel-To-Toe Drop
    8.0 mm
    External Shape
    Outsole Heel Width
    101 mm (4.0")
    Outsole Arch Width
    76 mm (3.0")
    Outsole Forefoot Width
    115 mm (4.5")
    Heel Width-To-Stack Ratio
    2.51
    Forefoot Width-To-Stack Ratio
    3.63
    Internal Shape
    Internal Length
    278 mm (10.9")
    Internal Heel Width
    69 mm (2.7")
    Internal Forefoot Width
    94 mm (3.7")
    Wide Sizing Available
    No
    Other Features
    Tongue Gusset Type
    Fully-gusseted
    Plate
    Carbon Fiber
    Performance
    2.5
    Heel Energy Return
    See details on graph tool
    Heel Energy Return
    74.0%
    6.4
    Forefoot Energy Return
    See details on graph tool
    Forefoot Energy Return
    79.2%
    8.3
    Heel Cushioning
    See details on graph tool
    Energy Absorbed At 300N
    1.25 J
    Energy Absorbed At 600N
    4.05 J
    Energy Absorbed At 900N
    7.55 J
    8.2
    Forefoot Cushioning
    See details on graph tool
    Energy Absorbed At 300N
    1.13 J
    Energy Absorbed At 600N
    3.14 J
    Energy Absorbed At 900N
    5.32 J
    5.3
    Heel Firmness
    See details on graph tool
    Average Firmness 0 To 300N
    33.0 N/mm
    Average Firmness 300 To 600N
    50.8 N/mm
    Average Firmness 600 To 900N
    71.3 N/mm
    8.3
    Forefoot Firmness
    See details on graph tool
    Average Firmness 0 To 300N
    38.2 N/mm
    Average Firmness 300 To 600N
    72.3 N/mm
    Average Firmness 600 To 900N
    113.5 N/mm