On is officially staking its claim in hybrid fitness racing.

The Swiss brand announced the signing of athletes Alexander Roncevic and Ida Mathilde Steensgaard, marking its official entry into the rapidly growing sport of hybrid fitness racing. The move comes paired with the debut of its first-ever dual-purpose performance shoe engineered for the discipline: the Cloud X Tempo Pro.

The Headliner

Roncevic, an Austrian athlete, is one of the most dominant forces in the sport and a former HYROX World Champion and current double world record holder in the Men’s Pro Singles.

The dude is a freak and made history as the first athlete ever to break the 52-minute barrier, finishing in 51 minutes 59 seconds in Warsaw.

Joining him is Ida Mathilde Steensgaard, a former two-time Obstacle Course Racing World Champion who has transitioned her elite versatility into fitness racing. She’s a fixture in HYROX’s Elite 15 class with numerous podium finishes worldwide, including a recent silver medal in Elite Doubles at the EMEA Championships.

So the Cloud X Tempo Pro wasn’t built in a vacuum, with On working hand in hand with Roncevic through months of lab testing, biometric analysis, and his direct feedback. Something you hear from On and its athletes quite often.

That process paid off fast: Roncevic broke both the Individual World Record and Men’s Doubles World Record while competing in a prototype.

What the Specs Say

The bounce comes from a full-length carbon Speedboard paired with a dynamic rocker shape for energy return, combined with Helion HF hyper foam for ultra-light cushioning and responsiveness.

For the functional side of things, a high-performance Missiongrip outsole handles grip and controlled transitions across racing surfaces, while a supportive midfoot cage and integrated strap lock the foot in during heavy-load stations like sled pushes.

On’s Will Moroski, Head of Product Vertical Training, framed it as a fusion project — engineered to fuse On’s run DNA with the support needed for hybrid fitness racing, built to deliver fast runs, optimized sled traction, and stability for lunges and wallballs.

Roncevic backed that up, noting the sport demands elite running performance combined with maximum stability for functional work, and that the shoe delivers on both fronts.

Why It Matters

HYROX has been the fastest-growing thing in fitness for two years running, and shoe brands are scrambling to figure out what a “hybrid” shoe even means. On just answered that question with a literal world record attached to it — not a marketing claim, a stopwatch. Signing both a men’s and women’s headliner while launching a co-developed shoe simultaneously is a full-stack play, not a toe-dip.

The Cloud X Tempo Pro launches globally in August 2026 for $240, ~£281 , €378 , €326, AU$534 and will be available at on.com and select premium retail partners.