On Cloud X

On Cloud X Shoes Built for Gym and Training Days

On Cloud X

Not every workout happens on the road, and the Cloud X is On's answer to everything that does not. This is the gym-day trainer, built for box jumps, circuits, HIIT and the odd treadmill mile, all in a shoe light and clean enough to wear out afterwards. If your other On trainers are made to go forward, the Cloud X is made to move in every direction. The full range sits at £139 right now, up to 34% off the usual £210.

Built for the Gym Floor

Training shoes and running shoes are not the same thing, and the Cloud X is designed for the difference. A wide platform with raised sidewalls keeps you planted through lateral moves, so cutting, pivoting and side steps feel stable instead of tippy. A firm Speedboard sits under the CloudTec pods to give a snappy, responsive pop when you change direction or push off hard. The whole thing weighs barely anything, around 240 grams, so your feet stay quick through every rep, and the dual-layer mesh upper clears heat and sweat during high-intensity work.

One Shoe, Two Jobs

Part of why the Cloud X is so popular is that it does not look like a gym shoe. The clean, low-key design means it pulls double duty as an everyday sneaker, so you can train in the morning and wear the same pair out for coffee without a second thought. That versatility makes it one of the easiest On trainers to justify. For softer daily wear off the gym floor, browse the lifestyle range, and for road cardio between sessions the On Cloud running shoes step up the speed.

Cloud X or Cloud X 4?

The line has evolved, and the newest Cloud X 4 in Black Eclipse and Glacier Eclipse feels snappier underfoot and holds its shape longer through weeks of heavy training. The classic Cloud X colours like Feather Black, Ivory Sand and Silver Flame carry the same versatile training feel. Either way you get that stable, quick, do-everything ride.

The Colours

Eight looks to train and street in. The blacks and greys, Feather Black, Fog Black, Ivory Black and the Cloud X 4 Eclipse pair, keep it sharp and understated, while Ivory Sand, Silver Flame and the bold Purple bring a bit more character. Same training-ready shoe underneath. The women's collection carries the Cloud X on a women's-specific fit.

Key Features

• Wide platform and raised sidewalls for lateral stability
• Firm Speedboard for a snappy, responsive push-off
• Lightweight build, around 240 grams, for quick reps
• Dual-layer mesh upper that clears heat during hard sessions
• Clean styling that doubles as an everyday sneaker
• Cloud X 4 snappier than the older X 3, all at £139

On Cloud X FAQs

Is the On Cloud X good for the gym?
Yes. It is On's dedicated training shoe, with a wide stable platform, sidewall support and Speedboard pop built for circuits, HIIT, lifting and lateral movement.

Can you run in the On Cloud X?
You can for short runs and treadmill miles as part of a session. For longer or faster road running, a dedicated On running shoe suits better.

What is the difference between the Cloud X and Cloud X 4?
The Cloud X 4 is the newest version, with a snappier feel underfoot and better durability through heavy training, while the classic Cloud X offers the same versatile training ride.

Is the On Cloud X good for HIIT and cross-training?
Yes. The stable base and light, responsive build make it a strong pick for HIIT, circuits, box jumps and mixed cross-training sessions.

Does the On Cloud X run true to size?
It generally runs true to UK sizing with a fairly roomy toe box. If you are between sizes, most people stick to their usual size.