Adidas Adizero Prime X3 Strung White Green Long-Distance Trainer

A best-seller with a simple promise: it absorbs the long runs that would otherwise leave your legs flat. White and Green is the cleaner look in the line, with green highlighting the Energyrods window and heel above one of the deepest Lightstrike Pro platforms adidas has built for training.

The protective half of a two-shoe rotation

Pair it with a lighter tempo shoe or racer. This one handles 20-mile efforts, back-to-back easy days and the tired miles at the end of a marathon block.

• Deep Lightstrike Pro: serious cushioning for big training weeks.
• Energyrods: keep the platform composed under fatigue.
• Strung upper: fibers mapped to the zones that need support.
• Wide forefoot platform: keeps the tall stack stable through turns.

Fit & sizing

True to size for the majority of runners, while wide feet may prefer half a size up. Brand new in the original box, 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.