On Cloudboom Strike 2: UK Launch, Price and Where to Buy (Already Selling Out)
On’s flagship marathon racer just got its first major update in two years, and demand outstripped supply within a day. The On Cloudboom Strike 2 and its LightSpray sibling launched in the UK on 30 July 2026 at £230 — and as of writing, every size across all three colourways shows “no items left in stock” on On’s own site.
What’s New
The Strike 2 introduces On’s new CloudTec Sphere cushioning system alongside a Helion HF “hyper foam” midsole and a curved carbon Speedboard for propulsion. It’s built specifically for marathon and half-marathon racing, with a breathable racing upper rather than the more structured build of On’s training shoes. This is On’s answer to the current wave of super-foam racing shoes from Nike, ASICS and Adidas — a segment triathletes doing standalone running races or the run leg of long-course events have increasingly bought into.
Price and Availability
UK RRP is £230.00, VAT included. At the time of writing, On’s own UK site lists all sizes (UK 3–13.5) across all three launch colourways — Aconite/Verdite, White/Lime and Verdite/Aconite — as sold out, with a “Notify me” waitlist in place of a buy button. We haven’t yet found a live Amazon UK listing; we’ll update this post with a direct purchase link as soon as stock returns.
If you want a carbon-plated racing shoe you can actually buy today, the original Cloudboom Strike and On’s wider Cloud range remain in stock at most UK running retailers, and our best triathlon running shoes roundup covers current alternatives across brands.
Should You Wait for Restock?
- If you’re chasing a marathon or half-marathon PB and want the newest plate technology, join On’s notify list directly on their product page — first-run stock tends to move fastest to email subscribers.
- A super shoe like this is a race-day tool, not a training shoe — expect a shorter lifespan (100-150 miles) in exchange for the speed gain, so budget for that if you’re new to the category.
- If your priority is the triathlon run leg specifically rather than a standalone marathon, a slightly less aggressive plated shoe may suit you better — see our take on whether super shoes are worth it on a triathlete’s budget.
