adidas

Adizero Prime X3 STRUNG

A very tall, stiff road trainer for long, steady fast efforts.

Sale US price · 2026-09-07. Before tax and shipping. Cloud White / Cloud White / Lucid Red; selected colorway sale, originally $305; excludes promotional codes.

Check price & sizes Back to my matches

Brand specifications

The shoe at a glance.

The Adizero Prime X3 STRUNG is a very tall, carbon-plated road trainer aimed at long, sustained faster efforts. Its balanced cushioning and pronounced stiffness give it a specific workout role rather than broad everyday versatility. That construction also feels heavy and offers limited stability beneath the heel, so runners seeking a flexible or supportive platform may find the tradeoffs difficult. The updated upper fits better than its predecessor, but improved foot hold does not remove the limitations of the narrow heel platform, and width options remain unverified.

Pros and cons

Our summary of published testing and reviewer impressions. Checked 2026-10-03.

Pros

Strong impact protection for sustained efforts.
The foam delivers substantial bounce.
The woven upper combines ventilation with improved fit.

Cons

Its weight and stiffness can feel cumbersome at easy paces.
Heel landings can feel unstable.

A closer look

Where it fits in your running

Recorded uses: faster training. Designed for road running.

Cushioning and ride

Independent testing describes an exaggerated, highly cushioned ride. The combination of height and stiffness is a specific preference, so it is worth trying at your actual training pace.

Our editorial ride category: balanced.

Fit and sizing

The independent review found the updated upper fits better than v2, but the narrow heel platform offers little support.

Available width options have not been verified.

The linked product range is not verified. Widths and price may vary between men’s, women’s and unisex versions. An offered width does not guarantee personal fit.

Before you choose

The independent review found it heavy, extremely stiff, and less stable under the heel.

Would you recommend this shoe?

Tried the adidas Adizero Prime X3 STRUNG? Help other runners with a quick rating.

Loading ratings…

Community ratings

One vote per shoe in this browser. You can change or remove it anytime.

Your retailer checklist

Save the range, size, and width you want to check. These choices do not filter retailer stock or change the recorded listing below. Choose them again on the retailer’s site.

Shopping regionRange to checkUS size to checkWidth to check

Checklist only. Your selections are not sent to the retailer.

adidas.com

Original price $305. Sale price $260. recorded · 2026-09-07

Cloud White / Cloud White / Lucid Red; selected colorway sale, originally $305; excludes promotional codes.

The recorded listing’s product range is not verified. Confirm the range, size, width, and stock at the retailer.

Open recorded listing Retailer return policy

Check the fit guide before choosing your size

Manufacturer specifications

Specifications from the brand’s product information.

Listed weight: Not verified
Heel-to-toe drop: Not verified
Heel stack height: Not verified
Plate: Carbon plate / rods
Support: Neutral
Recorded product range: Not verified
Widths offered: Not verified

Source: adidas product page . Listed weights may refer to different reference sizes.

Follow the evidence.

Information checked 2026-09-07. Ride and fit descriptions use brand information and published reviews where available; matching categories are our editorial interpretation.

adidas product details Official identity, intended use and listed specifications. The linked market may differ from the US.
US price and buying options Cloud White / Cloud White / Lucid Red; selected colorway sale, originally $305; excludes promotional codes.

Not categorized as a race shoe because of its extreme stack. Width options not verified.

Know what sits behind the advice.

Product information and editorial guidance help you compare. Catalog details checked 2026-09-07.

From the manufacturer

Identity, intended use, offered widths, and listed specifications. We label these as brand figures; reference sizes can differ.

Read adidas’s specifications

Fit and ride notes

Brand information and published reviews inform the descriptions of comfort, fit, and ride. Use these notes to choose pairs to try; your experience can differ.

Our matching categories

Ride labels and recommendation rules are editorial interpretations of the recorded sources. They describe catalog matches and cannot guarantee personal fit.

How the finder chooses

A missing specification means “not verified,” not zero. Price and availability need a fresh check at the retailer.

These share a recorded surface and catalog category. Shared running uses guide the order; personal fit and performance are not guaranteed.