Adidas Adizero Prime X3 Strung Ekiden Solar Blue Cushioned Trainer

Japanese road relays, where teams pass a sash instead of a baton, inspired the Ekiden colorways. Solar Blue is the brightest of the set, covering the full upper with deeper tones at the heel for a cleaner silhouette than the multicolor versions.

Who it is for

Despite the racing heritage, this is a dedicated training shoe. Its stack sits above the limit for official races, so use it where protection outranks weight: long runs, easy days and the tired back half of a big training week.

• Tall Lightstrike Pro midsole: tuned for long, cushioned road running.
• Energyrods: help keep the deep platform controlled.
• Strung upper in Solar Blue: bold, single-tone look.
• Max-cushion super trainer: made for mileage, not the start line.

Fit & sizing

Standard adidas sizing, so order the length you usually wear in Adizero models. Brand new in the original box, available in EU 36 to 47.

Most performance running shoes are built on a single unisex last: the shoe is identical, only the size label changes. A US women's 8.5 is a US men's 7.

Use the unit switch above to move between US men's, US women's, EU and UK, or open the size guide for the full conversion chart.

Between two sizes? Email us before you order and we will help you choose. Size exchanges are accepted within 30 days of delivery.

Free shipping on every order, with no minimum. Orders are delivered in 4 to 12 business days, preparation and transit included, and tracking is emailed as soon as your parcel is dispatched.

Business days only: weekends and public holidays are not counted. Orders placed after the daily cut-off, at the weekend or on a public holiday are processed on the next business day, and periods of high demand can add extra time. Full terms: Shipping Policy.

Not the right fit? Unworn shoes in their original box can be returned within 30 days of delivery for a refund or a size exchange. Return shipping is paid by the customer unless the item is damaged, defective or incorrect.

If an item arrives damaged, defective or different from what you ordered, contact us promptly after delivery and we will put it right. Full terms: Return & Refund Policy.

Brand new and unworn, shipped in its original box. Every pair is inspected individually before it is packed: we check that it matches the description and photos on this page, that it ships in new condition, and that it is packed securely.

Questions before you order? Our team replies Monday to Friday at contact@runningshoeshouse.com.