adidas Ultraboost 5X  Running Shoe Review

Reviewed Nov 20, 2025 at 03:54pm
Test bench update Apr 29, 2026 at 09:00pm
Tested using Methodology v0.10 
adidas Ultraboost 5X

Track

6.7
Marathon Racing 
6.4
5K/10K Racing 
7.6
Energy Return 
7.4
Cushioning 
7.7
Lateral Stability 
7.1
True To Size 

Track

 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

6.7
Marathon Racing 
6.4
5K/10K Racing 
7.6
Energy Return 
7.4
Cushioning 
7.7
Lateral Stability 
7.1
True To Size 
  • 6.7
    Marathon Racing
  • 6.4
    5K/10K Racing

  • Performance Usages

  • 7.6
    Energy Return
  • 7.4
    Cushioning
  • 7.7
    Lateral Stability
  • 7.1
    True To Size
  • Changelog

    1.  Updated Apr 29, 2026: We've converted this review to Test Bench 0.10, adding a new set of fit tests to the Design section and an overall fit performance usage. Check out the details in our changelog.
    2.  Updated Apr 13, 2026: We've converted this review to Test Bench 0.9, which adds a Forefoot Long Run Cushioning test to our performance section. Read more in our changelog.
    3.  Updated Nov 20, 2025: Review published.
    4.  Updated Nov 18, 2025: Early access published.
    How We Test Running Shoes
    How We Test Running Shoes

    We buy and test 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 so team members can log in miles. This real-world testing is conducted at various paces and conditions, across 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
    Sort:
    RATINGS
    Category:
    All
    Design
    5.5
    Weight
    Weight
    273.7 g (9.65 oz)
    Stack Heights
    Heel Stack Height
    39.5 mm
    Forefoot Stack Height
    27.7 mm
    Heel-To-Toe Drop
    11.8 mm
    Advertised Heel-To-Toe Drop
    10.0 mm
    External Shape
    Outsole Heel Width
    96 mm (3.8")
    Outsole Arch Width
    76 mm (3.0")
    Outsole Forefoot Width
    116 mm (4.6")
    Heel Width-To-Stack Ratio
    2.43
    Forefoot Width-To-Stack Ratio
    4.19
    Internal Shape
    Internal Length
    280 mm (11.0")
    Internal Heel Width
    65 mm (2.6")
    Internal Forefoot Width
    99 mm (3.9")
    Wide Sizing Available
    No
    9.2
    Forefoot Fit: Width
    Ball-Of-Foot TTS Deviation
    3.5 mm (0.139")
    Toe TTS Deviation
    2.7 mm (0.104")
    3.6
    Forefoot Fit: Height
    Toe TTS Deviation
    -7.4 mm (-0.293")
    7.3
    Arch Fit: Width
    Arch Width TTS Deviation
    -4.3 mm (-0.167")
    6.0
    Length Fit
    Other Features
    Tongue Gusset Type
    Non-gusseted
    Plate
    None
    Performance
    7.7
    Heel Energy Return
    Heel Energy Return
    79.0%
    7.5
    Forefoot Energy Return
    Forefoot Energy Return
    78.3%
    7.4
    Heel Cushioning
    Energy Absorbed At 550N
    2.70 J
    Energy Absorbed At 1100N
    9.20 J
    Energy Absorbed At 1900N
    18.04 J
    7.3
    Forefoot Cushioning
    Energy Absorbed At 800N
    4.51 J
    Energy Absorbed At 1300N
    7.87 J
    Energy Absorbed At 2050N
    11.40 J
    5.1
    Heel Firmness
    Firmness At 550N
    60.8 N/mm
    Firmness At 1100N
    86.7 N/mm
    Firmness At 1900N
    189.5 N/mm
    8.3
    Forefoot Firmness
    Firmness At 800N
    106.8 N/mm
    Firmness At 1300N
    225.7 N/mm
    Firmness At 2050N
    477.2 N/mm
    6.7
    Forefoot Long Run Cushioning
    Energy Absorbed At 10km
    7.38 J
    Energy Absorbed At 20km
    7.19 J
    Energy Absorbed At 30km
    7.07 J
    Energy Absorbed At 40km
    6.97 J