• Terrain


    Shoes best for road, track and light gravel. See the best road shoes.


    Shoes best for trail, off road, mountains and other unstable surfaces. See the best trail shoes.

    Good to know

    As long as you stick to the road or path, and if you want just one running shoe, buy a road running shoe.

  • Arch support

    Neutral / cushion / high arch

    Shoes for runners who do not need any additional arch support (Around 50% of runners). Best for people with normal, high or medium high arches. See the best neutral shoes.

    Stability / overpronation / normal arch

    Shoes for runners who need mild to moderate arch support (Around 45% of runners). Best for runners with a low arch. See the best stability shoes.

    Motion control / severe overpronation / flat feet

    Shoes for runners who needs a lot of arch support. Best for runners with flat feet. See the best motion control shoes.

    Good to know

    - Rule of thumb: If in doubt, buy neutral shoes to avoid injuries.
    - More about arch support in this video.
    - Find your arch type by following steps from this video.

  • Use

    Daily running

    Cushioned shoes for your daily easy running. Great comfort. See best shoes for daily running.


    Lightweight shoes good for races, interval training, tempo runs and fartlek. Here are the best competition running shoes.

    Good to know

    If you want just one pair of shoes, buy a shoe for daily running.

  • Price
  • Weight
    Men: 8.1oz
    Women: 6.6oz
  • Heel to toe drop
    Men: 6mm
    Women: 6mm

    The height difference from the heel to the forefoot, also known as heel drop, toe spring, heel to toe spring or simply drop.

    There are many opinions about what a good heel drop is. We do not recommend any in particular. Lean more in this video.

  • Heel height
    Men: 28mm
    Women: 28mm
  • Forefoot height
    Men: 22mm
    Women: 22mm
  • Width
    Men: Normal
    Women: Normal
  • Release date
    Nov 2017
Show more facts


A top rated Road running shoe
A top rated On running shoe
Top 10% most popular running shoes
It has never been more popular than this October

Expert Reviews

Experts are runners, who post reviews at youtube, directly at RunRepeat or at their own websites. Each expert is categorized from level 1 to level 5 based on expertise. See stats on expert reviews and how we calculate scores here.

Are you an expert? Apply to contribute here.

91 / 100 based on 7 expert reviews

  • 95 / 100 | Jan Schneider

    On Cloud X: A comfortable and responsive competition running shoes

    For many years, I ran mostly with minimalist shoes or racing shoes for longer and tempo runs. This year, I finally decided to train for a marathon requiring longer runs.

    However, minimalist shoes and longer runs was not a great combination. It puts tension in my calves and pain in my Achilles' tendons.

    Thus, I went to a specialized running store, relayed my running story, and asked for help in finding the perfect shoes for my longer runs.

    The guy in the store told me that I just needed something neutral with a bit of cushion and asked me to try different shoes. When he showed me the On Cloud X, I was a bit skeptical.

    I was somehow anchored to the idea that the simpler the shoe, the better. And, that these cloud things on the bottom of the shoes are only for snobbish people who do not know how to run.



    In my opinion, these people only like to invest a lot of money in their gear.

    Anyway, I still tried them on, and the first impression is that they felt really comfortable and lightweight. I ran and sprinted a few meters with them, and it felt ok.

    I did not feel the clouds. It felt as if I was wearing regular shoes.

    Among all the shoes that I tried that day, the On Cloud X were the ones that felt the best, so I bought a pair.


    The pair that I bought are black. It has a neutral design with a lot of little details, such as the tiny Swiss flag on their side. This flag makes them look good if you pay close attention to them.

    I am still not a big fan of how the “Clouds” on the sole of the shoes look like, but I’m getting used to them.


    They fit perfectly. It is really nice to wear them. The only thing I miss is feeling the different textures of the floor that I can do with minimalist shoes. I can’t feel those textures with these ones.


    Easy runs

    Easy runs with these shoes are even easier, running easily with these shoes is super comfortable.

    Even when I am tired and sore from previous days, I always feel like doing some small sprints with these during easy runs.

    Long runs

    I ran on these shoes for my longest run ever so far, which was of 33km. It was an easy long run. I changed my pace a few times during the run, and I felt very comfortable the whole time.

    I completely forgot about the shoes, which I think is one of the best indications of a good running shoe.

    Tempo runs and fartlek

    Even with extra cushion, it still feels pretty responsive and fast. It is easy to switch gears with it and stay running at a hard pace for a while. These are not the fastest shoes on the market.



    However, it is fun to sprint with these shoes.


    I have run with them on the pavement, track, and a bit of cross country, and they seem to work pretty well.


    It is still too soon to judge these when it comes to durability. But, after 150km, they still look and feel like new.


    It is hard to admit it after being a big fan of minimalist shoes, but I really enjoy running in these shoes. It is definitely easier to run in them than with minimalist shoes.

    They are very comfortable and responsive. Moreover, I can definitely feel less stress on my calves and Achilles’ tendons after wearing them.

    Positive points

    • Lightweight
    • Comfortable
    • Relatively Fast

    Negative points

    • Lack of barefoot feeling

    This expert has been verified by RunRepeat. Reviews are neutral, unbiased and based on extensive testing.

  • 87 / 100 | Running Warehouse | | Level 4 expert

    A lightweight and flexible design paired with fantastic comfort, the On Cloud X delivers a unique running experience that can handle anything from tempo runs to daily training.

  • 82 / 100 | Belive in the Run | | Level 3 expert

    It's a comfortable shoe to wear around so that's why would recommend it for someone who's not looking for high mileage maybe runs 12 miles a week and then does their workout. This would be a great shoe for that.

  • 98 / 100 | Road Trail Run | | Level 5 expert

    Tempo’s [sic], races and workouts for me. [The On Cloud X] shined so well on the track as well. Don’t count this out for the oval office.

  • 98 / 100 | Road Trail Run | | Level 5 expert

    The Cloud X is a spectacular looking shoe with great versatility for a number of faster running and potentially for other “purposes"of the gym and lifestyle variety.

Become an expert

  • On Running introduces the Cloud X, which boldly declares itself to be the world’s lightest fully-cushioned running shoe. The shoe is marketed towards athletes who do running mixed with other types of workouts.
  • The Cloud X pays attention to the minute details: With its dual-density sock liner and seamless tongue, the shoe provides comfort unlike any other.
  • Using a high-quality engineered mesh, the upper promises optimum performance while also providing breathability. It aims to support the foot without restricting its movements.
  • The shoe features a CloudTec® sole built from the latest-evolution Zero-Gravity foam, thus enabling movements that are natural yet flawless. It is aided by Speedboard, their very own cushioning pad technology that gives a precise fit while keeping the foot in place.

The Cloud X is a running shoe that is true to size. Runners are recommended to get a size that follows their usual shoe measurements. The shoe’s moderate construction will accommodate narrow to medium foot volumes. Width profiles are available in D – Medium for men and B – Medium for women.

The outsole of the Cloud X comprises On’s patented CloudTec® outsole. Like the other running shoes from on, the Cloud X’s outsole is engineered to provide cushioning that adapts to any activity, whether all-day wear or active training time. The On Cloud running shoe also features this technology.

CloudTec® uses Zero-Gravity foam, which works under the concept of support without pressure, resulting in a shoe that feels almost weightless. This technology allows for an efficient full-speed run, such as races.

Similar to previous releases from On, the Cloud X also uses CloudTec Elements, the brand’s midsole technology that comes in the form of pods with hollow channels in the middle. These pods work by deflecting under pressure to help the shoe flex and give the foot a stable push-off from the ground. The CloudTec Elements are recognized in the ability to provide a springy ride, as the pods add bounce to each step and distribute impact during the landing phase.

On top of the CloudTec Elements is the Speedboard, a full-length synthetic plate that flexes to enable a smooth transition and a soft landing. The Speedboard is designed to work on various aspects – flexibility, energy distribution, torsion guidance, and dynamics; thus, the foot achieves a more efficient running gait and maximum performance.

The upper of the Cloud X uses a soft outer material made of engineered mesh and an inner mesh layer. With this two-layer upper system, the foot is wrapped snugly and comfortably while ensuring breathability and dynamic movement.

There is an external heel counter that offers support to the area, as well as reinforces and keeps the foot fitted in a variety of 360-degree movements.

The Cloud X uses a traditional lacing system to promote a more accessible yet more secure way of tightening the shoe.