The only On shoe the maker describes as for HYROX is the Cloud X Tempo Pro. It is 267.4g at JPY 33,000, with sole rubber that names the sled stations. On has 6 gym models and 12 running models, and the lightest running one is 191g.
The Shoe Nerd's top pick
If I buy 1 pair of On, I look at the running shelf first, not the gym shelf. Even the lightest gym shoe, the Tempo Pro, is 267.4g. The running range has a 210g race shoe. In a sport with an 8km run, a 57g gap is not light. Choose the gym shoe only if you have slipped on the sled before.
Key points
- The 6 gym models run 267.4 to 365g. The one described as race spec is the Cloud X Tempo Pro
- The 12 running models run 191 to 330g and JPY 18,700 to 35,200
- Unused items bought at the official store can be returned within 30 days
On's HYROX shoes split into 2 shelves
On's Japan official site sorts shoes by use. The 2 shelves that matter for HYROX are "gym shoes" and "road running shoes."
The race is an 8km run and 8 stations. It sits right between the shelf of shoes to run in and the shelf of shoes to plant your feet in. Which shelf you choose from changes the shoe's character a lot. The numbers are what I read on the official pages on Oct 13, 2026.
On's 6 gym shoe models (Cloud X Tempo Pro and others)
Scroll the table sideways →
| Model | Weight (men's) | Weight (women's) | Heel-to-forefoot drop | Official price | Official use |
|---|---|---|---|---|---|
| Cloud X Tempo Pro | 267.4g | 218.7g | 9mm | JPY 33,000 | Fitness race |
| Cloud X 5 | 290g | 239g | 8mm | JPY 22,000 | Training |
| Cloud X Tempo | 307g | 249g | 8mm | JPY 24,200 | Both running and high-intensity training |
| Cloudpulse Pro | 365g | 305g | 6mm | JPY 24,200 | Strength training |
Cloud X Tempo Pro: the 1 pair written as race spec
Of the 6 models, this is the only one with "fitness race spec." It carries a "hybrid fitness race" tag in the list.
The build is closer to a race shoe than a gym shoe. A carbon plate runs end to end, and the sole rolls forward. The sole rubber is called Missiongrip, designed with sled push and pull stations and wall balls in mind. It is the lightest of the gym shoes, about 23g lighter than the 2nd-lightest, the Cloud X 5 (290 − 267.4).
The price is the highest of the 6 models too. The gap from the Cloud X 5 is the plate and the lightness.
Cloud X 5 and Cloud X Tempo: for everyday training
The Cloud X 5 is the basic gym model. The official page says a plate for running is deliberately left out. The sole is thin and bends easily.
The Cloud X Tempo is the same line with a 2-layer sole of different densities added. Its positioning is "one pair for both running and high-intensity training." The weight is 17g more than the Cloud X 5.
Image: Rakuten Ichiba
On Cloud X
The lowest price on Rakuten is JPY 20,900 (as of 10/13). Prices change daily. For shoes, the surest test is trying them in the evening, when your feet swell, with your usual socks. Fit varies by brand, so check the store's return and exchange terms before you buy.
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Image: Rakuten Ichiba
On Cloud X Tempo
Lowest price on Rakuten is JPY 17,160 (as of 10/13), ranging up to JPY 36,960 depending on the shop. Prices change daily.
RecommendedSee it on Rakuten IchibaSee it on Yahoo! Shopping JapanThe 2 Cloudpulse models: the side that supports weight
The Cloudpulse Pro is 365g, the heaviest of the 6, with a 6mm heel drop, the smallest. A plate that limits twisting sits on the heel side. Its official use is strength training.
The weight gap from the Tempo Pro is about 98g (365 − 267.4). For race day in HYROX, with its long running distance, it is the heavy-side shoe. Treating it as a shoe for days you lift heavy things in the gym fits the numbers.
Image: Rakuten Ichiba
On Cloudpulse
Lowest price on Rakuten is JPY 16,940 (as of 10/13), ranging up to JPY 28,000 depending on the shop. Prices change daily.
RecommendedSee it on Rakuten IchibaSee it on Yahoo! Shopping JapanOn's 12 running shoe models
Scroll the table sideways →
| Model | Weight (men's) | Heel-to-forefoot drop | Official price | Official category |
|---|---|---|---|---|
| Cloudboom Strike 2 | 191g | 5mm | JPY 35,200 | Marathon races |
| Cloudboom Volt | 210g | 5mm | JPY 26,400 | 5 to 10km races |
| Cloudmonster 3 Hyper | 253g | 6mm | JPY 27,500 | Long distance, faster training |
| Cloudsurfer 2 | 261g | 9mm | JPY 20,900 | Daily running |
| Cloudsurfer Next | 273g | 6mm | JPY 18,700 | Daily running |
| Cloudswift 4 | 278g | 8mm | JPY 20,900 | City running |
| Cloudflow 5 | 278g | 8mm | JPY 23,100 | Faster training |
| Cloudsurfer Max | 292g | 6mm | JPY 23,100 | Long distance |
| Cloudmonster 3 | 295g | 6mm | JPY 24,200 | Daily running, rebound |
| Cloudboom Max | 296g | 8mm | JPY 28,600 | Marathon races |
| Cloudrunner 3 | 311g | 8mm | JPY 18,700 | Daily running, stability |
| Cloudrunner 3 Max | 330g | 8mm | JPY 24,200 | Long distance, stability |
Sorted lightest first. The gap between the lightest, the Cloudboom Strike 2 (191g), and the heaviest, the Cloudrunner 3 Max (330g), is 139g.
The Cloudrunner 3 Max is a stability shoe for running long distances without breaking down, with a 2-layer sole stacking Helion HF and a heel clip. Details are in the Cloudrunner 3 Max review.
The HYROX run is 1km, 8 times, 8km in all. The official category closest to that is the Cloudboom Volt, described as for "5 to 10km races." It is 210g with a carbon-blended plate. It is about 57g lighter than the Tempo Pro, the lightest gym shoe (267.4 − 210).
To keep the price down, the cheapest in the table are the Cloudsurfer Next and the Cloudrunner 3. These 2 differ by 38g (311 − 273), with the Cloudrunner 3 built with more weight on stability.
The Cloudsurfer 2 in the table: generation 3 went on early release at specialty stores on Oct 1, 2026. How it changes from the 2 is in the Cloudsurfer 3 review.
Image: Rakuten Ichiba
On Cloudsurfer
Lowest price on Rakuten is JPY 14,950 (as of 10/13), ranging up to JPY 23,100 depending on the shop. Prices change daily.
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Image: Rakuten Ichiba
On Cloudmonster (check the generation in the product name)
Lowest price on Rakuten is JPY 22,000 (as of 10/13). Prices change daily. Shoes are best tried on in the evening, when your feet swell, with your usual socks. Fit varies by brand, so check the return and exchange terms on the shop page before you buy.
RecommendedSee it on Rakuten IchibaSee it on Yahoo! Shopping JapanGym shoe or running shoe for HYROX? The two compared
| Gym (Tempo Pro) | Running (Cloudboom Volt) | |
|---|---|---|
| Weight | 267.4g | 210g |
| Heel-to-forefoot drop | 9mm | 5mm |
| Plate | Carbon | Carbon-blended plate |
| Outsole rubber | Missiongrip (names the sled stations) | Rubber sole |
| Official price | JPY 33,000 | JPY 26,400 |
On lightness and price, the running shoe wins: 57g lighter and JPY 6,600 cheaper. Where the gym Tempo Pro comes out ahead is the sole rubber. When you push the sled, force leaks if your foot slides back. The Tempo Pro is the only one with a sole made with the sled stations in mind.
- Want to make time on the run → the running Cloudboom Volt
- Do not want your feet to slip on the sled → the gym Cloud X Tempo Pro
- Want to keep the price down → Cloudsurfer Next (JPY 18,700)
- For gym training → Cloud X 5. Keep it separate from your race shoe
What to know when buying On
Items bought at On's official online store can be returned or exchanged within 30 days of the day they arrive, if unused. On pays shipping and return shipping. When you are unsure of the size, buying from the official store lets you redo it.
If you will match shirts and shorts from On too, the article on On running apparel compares 8 pieces by material and pockets.
What Rakuten sells is from sporting goods stores and other retailers. Items bought from a retailer follow that store's rules. The price is the same as the official site or, depending on color, sometimes cheaper.
HYROX gear is collected in the race-day packing list. For watches, see HYROX watches; for training, training equipment you can set up at home.
FAQ
Is there an On shoe with the HYROX name on it?
The HYROX name does not appear on On's Japan official product pages. The Cloud X Tempo Pro is described as "hybrid fitness race" and "fitness race spec." Shoes carrying the HYROX name come from PUMA (6 recommended shoes).
How do the Cloud X Tempo Pro and Cloud X 5 differ?
Plate and weight. The Tempo Pro has a carbon plate at 267.4g; the Cloud X 5 has no plate at 290g. The official price gap is JPY 11,000 (33,000 − 22,000).
Which On gym shoe is the lightest for women?
The Cloud X Tempo Pro at 218.7g. Next is the Cloud X 5 at 239g.
Can I still buy the Cloudmonster 2 or Cloud X 4?
The Cloud X 4 remained in a limited color at JPY 20,900. The official current list has moved to the Cloudmonster 3 and Cloud X 5. Rakuten sometimes lists the previous generation. Check the generation by product name.
