Facts

Terrain: Road
Arch support: Neutral
Weight: Men: 7.8oz | Women: 6.7oz
Heel to toe drop: Men: 6mm | Women: 6mm
Pronation: Neutral Pronation
Arch type: High arch
Material: Vegan
Strike Pattern: Midfoot strike
Distance: Competition
Release date: Nov 2016
Brand: On
Type: Low drop
Width: Men: Normal | Women: Normal
Price: $140
Colorways: Blue, Orange, Black, Beige, Red, Grey, Purple
Size
Small True to size Large
See more facts

Rankings

A top rated Road running shoe
A top rated On running shoe
Top 4% most popular running shoes
It has never been more popular than this November

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.

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87 / 100 based on 26 expert reviews

  • 74 / 100 | Joseph Arellano

    Will you run with the clouds in the On Cloudflow?

    More photos

    According to the Running Warehouse, “The On Cloudflow is a lightweight neutral trainer that features 18 individual cloud pods underfoot for a high level of cushioning and responsiveness.”

     

     

    Do we concur with this assessment? See the verdict below.

     

     

    The shoe

    On Cloudflow has a lightweight mesh upper that fits comfortably. Why do I mention this first? I say this upfront because earlier, I was unsuccessful at attempting to wear test the On Cloudace model.

    That stability shoe had a thick, heavy, and high rising ankle collar that rubbed painfully against my ankle bones with each and every step.

    I came to slowly accept the fact that retaining skin on my ankle bones was a priority.

     

     

    The upper of the Cloudflow is not just light; it’s well-ventilated. And, the rubbery tongue is a joy to behold. The Cloudflow also offers excellent reflectivity for dusk or early evening runs.

    The squared-off front of the shoe is unique and works quite well. One’s toes have plenty of room in which to splay with glee.

    However, some will find that there’s not enough room over the toes—the toe box is low, quite low.

    (I asked for a pair a half-size larger than my usual running shoe size to ensure that my big toes and toenails were not crunched.)

    Space is further reduced by the relatively thick insole which seems like it belongs in a more substantial shoe, not one that weighs just 8.2 ounces.

     

     

    The Cloudflow is commendably flexible in one’s hands. (But, is it flexible on the road? We will get to that below.) The slip-lasted board under the insole, however, feels extremely firm. 

    Does it have to be this firm? And, oh, yeah, there’s the strange shoelaces. They are long. Ungainly long. Unnecessarily long. Disturbingly long.

    The Cloudflow has a 6 mm drop and feels low to the ground whether you’re walking or jogging. Whether this is a positive or negative factor will depend on one’s personal preferences. 

     

     

    Appearance-wise, the Cloudflow is quite attractive, especially in the Lake/Fern (blue/green) colorway.

     

     

    On the road

    The pods (or pads) underneath the foot in the Cloudflow make the shoe awkward to walk in; I was reminded of a Newton running shoe

    It is unlikely that one would run in this shoe and then keep it on for knocking about or doing errands. 

     

     

    The seemingly highly flexible forefoot on the Cloudflow does not, unfortunately, translate on ground contact. The nine pods upfront negate the shoe’s ability to flex on the run.

    And, the firm feeling forefoot combines with a soft—but sadly indistinct, heel strike. And so, the Cloudflow proves to be quite uninspiring on slow to mid-speed runs.

    The cushioning feels vague and dull. It also feels retro, like you’re running in a shoe from the past. The shoe’s suspension feels firm.

    As we know with automobiles, firm suspensions are not great on cars that are driven slowly. But, they can be great on cars that are driven fast! And, this is the key to the Cloudflow.

    The Cloudflow transforms itself on speedy pace training runs. It goes from being a dull trainer to a performance trainer-slash-race day flat.

    The previously mentioned low-to-the-ground feel puts one in mind of a racing flat and builds confidence, especially since this narrow shoe has enough wideness upfront to impart a sense of stability.

    The flaws of the Cloudflow on slow to mid-speed runs disappear when one is running fast. The minimal cushioning and responsiveness of the shoe can be ignored as the firmness takes over.

     

     

    You are no longer running in the equivalent of a Buick Regal automobile; You’re in a Porsche Boxster, and it feels just fine. In fact, more than fine.

    Value

    I was honestly shocked to see that the Cloudflow retails for $140.00.  I think a fair price for the shoe would run in the range of $110 to $120, with $125 being the absolute maximum.

     

     

    The verdict

    The On Cloudflow is an interesting lightweight neutral trainer; one that suffers from a split personality.

    For most runners, it will get the job done as a basic trainer, even though it lacks the excitement that other shoes at its price point can deliver.

     

     

    The Cloudflow also lacks the feel of modern-day technology. The shoe looks attractively modern but performs like a shoe brought back from 1991 in a time travel machine. 

    All of this goes out the window for fast runners who can beneficially use the Cloudflow as a fast, reliable pace trainer and as a race day shoe.

    But, I doubt that these runners—these Cheetahs, will want to pay $140 for the Cloudflow.

    Consider, if you will, that the Asics Lyteracer performance trainer/racing flat can be purchased for just slightly more than half the price of the Cloudflow.

    The Lyteracer, by the way, weighs the same 8.2 ounces as the Cloudflow.

    In terms of the price to performance ratio, the Cloudflow seems deficient.

    But, if you are willing to pay a premium for a very nice looking shoe providing “Swiss Engineering”—one that not everyone else is wearing—you may not mind making your wallet lighter. 

     

     

    (I would not pay $310 to $400 and more for a meal at The French Laundry restaurant in Yountville, California, but some people will do so without hesitation.)  

    On running shoes have always been unique, and for some, this will be enough.

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

  • 90 / 100 | Ilsuk Han

    On Cloudflow: Evolution and Revolution

    More photos

    Full disclosure – I'm a huge fan of On Running, the innovative Swiss company which has been making waves since its founding just 7 years ago.

    Over the past 3 years I've accumulated (through my own purchases) no less than 8 of their models and, while I've not loved everything about all of them, by and large they are my favorite shoes to run in, whether for long slow runs (Cloudrunner), racing 5ks to marathons (Cloudracer), or for going off-road (Cloudventure).

    One of their models, the Cloud, actually looks more like loafers than runners, and don't look too out of place worn to the office with chinos.

    With the introduction of each new model, the company has shown it is not afraid to think outside the box, whether it be in the design, upper material, lacing configuration or, perhaps most obviously and crucially, the outsole.

    It has, quite frankly, been fascinating to observe the progression of the company's line-up, with each innovation and tweaking by and large for the better. This is refreshing to see in an industry which is dominated by a few established majors where sometimes new iterations bear change just for the sake of change and not always for the better.

     

    My On running line-up. Shoe problems? What problems?

    Cloudflow

    So, this brings us onto the Cloudflow, which is again a culmination of evolution along with new features and is targeted according to On for "runners looking for a very lightweight and responsive performance shoe."

    The shoe is indeed light, weighing in at just 220gr for Men's US8.5 and with 6mm heel-toe offset, which is the default standard for On for their daily trainer range (vs 5mm drop for racing-oriented models).

    Cloud-Tec is On's term for the outsole "pods" which is the most distinguishing feature of their shoes, and Cloudflow incorporates 18 of them, which is the most they've had on any model to date.

    Less visible but just as important, is the Speedboard, a piece of rigid material which line their shoes and provide for a smoother transition and explosive lift-off, contributing to the overall "feel."

     

    Pods seen closer up

     

    Now, the pods. Being elite-level athletes themselves, the founders cottoned on to the fact that running on more forgiving surfaces such as sand and graveled to less post-run pain and impact-related injury over long-term.

    This makes sense since softer surfaces should lead to softer landing. However, at a cost – more effort is then needed for takeoff. The pod is On's solution to this, to enable "cushioned landing, firm takeoff." All of this is much better explained on their website so I'll just say that it works – to varying degree of success, however.

     

    From L to R: Cloudrunner, Cloud, Cloudflyer

     

    Earlier pod designs as seen on previous models of Cloudsurfer and Cloudrunner suffered durability issues which to the company's credit they were quick to address, both by offering free replacements and through design improvement.

    The Cloud showcased the new design and the subsequent Cloudflyer was akin to a hybrid between the two, with the ever-present aim of achieving both the feel and durability. The Cloudflow in a sense is the most evolved form, where the number of Cloud elements is increased from the 12 in the Flyer to 18 while retaining a similar shape to those in the Flyer.

     

    Cloudflow's 18 pods

    Putting them to the test

    So the Cloudflow may represent the end-result of experimentation with both design and number of pods. The most important question remains though – does it work? And having put some 150km on them over a variety of distances and paces, I can conclude that they do.

    The feel is, as you would expect, firmer than Cloudsurfer or the Runner but more cushioned than the Flyer while the upper feels as light and unobtrusive as the Cloud.

    The fit is comfortable as I have found all of On's models to be (with the exception of new Cloudsurfer which I found a bit "sloppy" and with the laces running down pretty much the entire length of the foot I found it easy to dial in an ideal fit.

    The attention paid to design and detail again does not disappoint and it is clear the company takes quality control seriously, with very little to fault in terms of the product and much to admire.

     

    Proud attention to detail

     

    Of particular note is the upper, which consists of overlays of "engineered mesh" where the absence of seams translates directly into comfort, whether socked or sock-less.

    A minor gripe for Cloudflow and indeed all of the current generation models is the lace, which is too long and too thin, perhaps due to overzealous nod to aesthetics over function. The thinner laces do tend to untie themselves a bit too easy mid-run.

    Fortunately, I had a solution at hand. Some of the older models used to come with two sets of laces, in different colors, and I simply swapped out the laces in Cloudflow with the spares from Cloudrunner.

    Not only do they now stay tied better, but also look better, if I may say so. The other minor point is that the soles are not the grippiest in the wet, but that is probably true of most shoes barring the Adidas models bearing Continental rubber.

     

    Original lace (L) vs customized (R)

    Conclusion

    Overall, I think for neutral runners looking for a daily trainer that can also be stretched to racing 10ks, half marathons or marathons in, the Cloudflow would be ideal. The super-breathable upper together with dubious grip also means these are better suited to drier warmer weather running.

    What I can say as a long-time follower is that On Running continues to impress with each new offering, and Cloudflow has definitely found a place among my On collection. To be specific, between Cloudrunner for long slow runs and Cloudracer for well, racing.

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

  • 87 / 100 | Believe in the Run | | Level 5 expert

    Along with looking good, this shoe also performed well.

  • 86 / 100 | Run247 | Level 3 expert

    It is a lightweight shoe and the fit is really snug as well.

Become an expert

  • 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.

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. This midsole element is also used in On Cloud and other well-known shoes from ON Running

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