Arch support
M: 220g | W: 190g
Heel to toe drop
M: 6mm | W: 6mm
Widths available
M: Normal - D | W: Normal - B
Show moreless facts


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.

Neutral / cushion / high arch

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

Stability / overpronation / normal arch

Shoes for runners who needs arch support (Around 45% of runners). Best for runners with a normal arch. See the best stability shoes.

Motion control / severe overproanation / 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.

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.

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.


We spent 8.7 hours reading reviews from experts and users. In summary, this is what runners think:

8 reasons to buy

  • Many runners welcomed the On Cloudflow, stating that it performed well.

  • Several testers were thankful that this shoe was able to provide comfort to their feet.

  • Wearing this shoe for long periods of time didn’t cause any strain or discomfort to the muscles, according to those who have tried it.

  • A lot of consumers were satisfied that it was lightweight.

  • The design and the color schemes received some praise; there were runners who thought that it was visually appealing.

  • Some testers were confident about this shoe’s quality, commending its apparently robust material-construction.

  • The cushioning system was comfortable and responsive, conveyed a reviewer.

  • A runner stated that they were able to use the On Cloudflow for a variety of activities on the flat surfaces and they reported that it stayed agreeable throughout.

3 reasons not to buy

  • A tester reported that rocks kept getting stuck in the crevices and holes of the sole unit, and that they were hard to get out.

  • The outsole wasn’t able to grip wet surfaces well, a reviewer wrote.

  • A runner noted that the rubber pattern below each cloud pod wore off quickly.

Bottom line

The On Cloudflow gained some fans because of its efficacy and its agreeable design. Many runners welcomed its lightweight nature, its responsive cushioning systems, and its apparently cool aesthetics. There were close to no complaints when it comes to this neutral road shoe.

World wide, Cloudflow is in the top 20% most popular running shoes. The brand, On, is the 16th most popular.

Map: Shows popularity per continent based on 1010 shoes


4.6 / 5 based on 137 ratings

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Expert reviews

Experts are running shoe geeks, 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.

85 / 100 based on 15 expert reviews

  • 87
    ThomasLevel 3 expert
    by Believe in the Run
    Along with looking good, this shoe also performed well.
  • 86
    Run247comLevel 1 expert
    by Run247com
    It is a lightweight shoe and the fit is really snug as well.
  • 96
    Sam WinebaumLevel 5 expert
    by Road Trail Run
    At 8.2 oz this is an incredibly light shoe for the cushion, stability, and upper support provided. There are really no compromises in those areas. The upper is among the finest, if not the finest of 2016. 
  • 84
    Michael Mason-D'CrozLevel 4 expert
    by Running Shoes Guru
    If you want a good tempo, speed or racer shoe with some cushion included, these are a great option. At the light weight they register, they are a great option for that and single-digit training runs.
  • 81
    Thomas NeubergerLevel 4 expert
    by Believe in the Run
    This is a daily trainer that will retire as a casual shoe for sure. This shoe looks good, has a solid running platform, and is light. 
  • 85
    Meaghan MurrayLevel 3 expert
    by Believe in the Run
    When I’m not sure what shoe I want to run in, I pick these up. Why? They’ll work for just about any run, I love the look, and they’re comfortable. 
  • 80
    Cathy KernsLevel 3 expert
    by Holabird Sports
    Running efficiency, injury prevention, and optimal performance are ever-present in this newest installment because of the blend of lightweight and responsive cushioning from more cloud elements (the pods that make up the outsole).
  • 90
    Brian MetzlerLevel 2 expert
    by Competitor
    This is the shoe for you if you're looking for a next-level training/racing shoe without limitations ideal for anything from short and fast repeats or racing from 1 mile to half marathon distances.
  • 85
    HoughboyLevel 1 expert
    by Accelerate Buzz
    So on first run, they allowed me to turn on sudden bursts of speed, while for the main – I sauntered to work at a steady level 1 or 2 heart rate (easy does it).  There’s a real feeling of being fleet of foot in them and I like the sensation, a real sense that you wanna go fast.  I’ve really not felt quite so excited in a shoe for at least a year or so. 
  • 83
    Dave CressmanLevel 1 expert
    by Distance Runwear
    It feels light under foot yet still maintains good structure and support. The Speedboard gives the shoe a little extra push when you want to pick up the pace yet doesn’t get in your way when you want to take it slow.
  • 82
    Stuff CambodiaLevel 1 expert
    by Stuff Cambodia
    If you’re looking for next-level training/racing shoes without limitations ideal for anything from short and fast repeats or racing from 1 mile to half marathon distances, these are the shoes for you!
  • 80
    Jeff DengateLevel 1 expert
    by Runner's World
    It’s a little firm for everyday training, but the shoe excels when going fast.
  • 80
    AlanLevel 1 expert
    by Running Warehouse
    For those familiar with ON, the Cloudflow is on the lighter, more responsive end of the spectrum, and not very soft at first step in. If you’re a fan of the ON Cloudtec system, the Cloudflow is worth a try. I recommend this shoe if you’re in search of a shoe for faster road runs or longer road racing.
  • 80
    Sport 360°Level 1 expert
    by Sport 360°
    If you’re a devotee to a particular brand and want to move away from the more established names, then the Cloudflow is the perfect trainer to try something different.
  • 79
    Simon GeorgeLevel 1 expert
    by The Lincolnshire Runner
    Generally I’ve loved running in the Flows, and they are easily my favourite ON shoe, to date. They felt great straight out of the box and perform admirably over a wide range of sessions – so much so that they will most likely be the shoe that I race triathlons in for the 2017 season, from sprints up to half ironman distance. The only niggle I have about these shoes is the traction issues on some surfaces/conditions, however, this will hopefully become less of an issue when the weather starts to pick up and the roads dry out!
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Updates to Cloudflow

The On Cloudflow is a running shoe that’s created for those who want to have faster running outputs. Those with a natural foot-roll are the ones who are going to enjoy what this package has to offer. There are different colorways for both the men and women’s versions. They’re flashy, but not distracting to the eyes. Top-quality materials were used in this shoe.

The upper unit of this shoe features engineered mesh, which actually resembles woven cloth. It’s durable, supportive and it has an antimicrobial finish. Breathability is also at the top of its game because it accommodates the flow of environmental air into the foot-chamber. This model also has a built-in sock, which heightens the comfort felt by the foot. One can even wear it without putting on actual socks first.

The sole unit of the On Cloudflow utilizes the Zero-Gravity EVA foam, a lightweight material that’s responsive yet durable. The platform also takes a unique shape, which is visible outside the shoe: 18 semi-circular pods make up the rest of the cushioning system. Called ‘clouds’, they deliver responsible cushioning from the foot-strike to the toe-off.

Layered underneath the individual ‘clouds’ is a durable rubber material. It protects the foam material from the abrasive nature of the asphalt. A textured pattern ensures additional traction and surface control.

Cloudflow size and fit

The On Cloudflow runs a bit bigger than the standard, so it is recommended for runners to choose ½ size smaller in order to get a more relaxed fit. The available width for both the men and women’s versions is medium. It accommodates those with medium sized feet.


The outsole unit of the On Cloudflow uses the CloudTec rubber, which is a durable material that covers the cushioning ‘clouds’. It’s actually also responsive, so it adds a bit more cushioning to the runner and a bit of energy for the toe-off.

A honeycomb pattern is used in the outsole. This design is meant to improve the shoe’s grip on the surfaces, not unlike the traction patterns on a vehicle’s tire.


Zero-Gravity EVA is the material used for the main sole unit of the On Cloudflow. It’s durable, yet it’s lightweight and responsive. It delivers reliable underfoot cushioning. It’s also the material used for the ‘cloud’ pods.
The Clouds are pods that deliver additional cushioning throughout the gait cycle. They attenuate the impact shock during the landing phase, and they push off the ground in a responsive and energized way. There are 18 of these ‘clouds’ on the surface of the sole unit.

The Speedboard is an add-on that facilitates natural foot-motion as the runner goes through the gait cycle, ending with an explosive toe-off. It also delivers torsional rigidity, which is helpful in reducing the strain and fatigue felt by the muscles of the underfoot.

A cushioned sock liner has been added to provide additional underfoot cushioning. It’s been treated with an anti-microbial coating to prevent the buildup of odor-causing bacteria.


The upper unit of the On Cloudflow features engineered mesh. It’s a breathable material that has the feel of a woven cloth. It wraps around the foot securely, but it allows the runner to move as naturally as possible.
The perforated tongue permits additional airflow into the foot-chamber. It’s thin, but it doesn’t easily fold over itself.

This running shoe has a built-in sock in its inner sleeve. It makes the interior environment more comfortable and secure. Also, it won’t allow the foot to slip around while inside the foot-chamber, thus preventing skin irritation or deviation in the running output.

The upper has been treated with an anti-microbial coating, therefore effecting a clean and healthy running experience.

A pull-loop in the heel area allows the runner to wear and remove the shoe easily.


Comparison to category means
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