• 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
    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: 7.8oz
    Women: 6.2oz
  • Heel to toe drop
    Heel to toe drop
    Men: 5mm
    Women: 5mm

    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
    Heel height
    Men: 20mm
    Women: 20mm
  • Forefoot height
    Forefoot height
    Men: 15mm
    Women: 15mm
  • Width
    Men: normal
    Women: normal
  • Release date
    Release date
Show more facts


We spent 6.5 hours reading reviews from experts and users. In summary, this is what runners think:

6 reasons to buy

  • The majority highly appreciated the light weight of the On Cloudflash.
  • Most users mentioned that the shoe was highly comfortable.
  • A few wearers lauded the responsiveness of the Cloudflash especially on concrete surfaces and called it a ‘great racing shoe’.
  • A reviewer thought that the upper was fairly breathable since it allowed a good amount of air circulation through it, thereby keeping his feet cool and the rides fun.
  • A few purchasers expressed admiration for the colors and the overall look of the shoe by calling it ‘pretty’.
  • A runner intended to use these shoes for his upcoming marathon race owing to its great all-around features.

1 reasons not to buy

  • Several runners labeled this running shoe’s price as expensive.

Bottom line

With its unbelievably light mesh material, impressively soft yet responsive build, and an eye-catching look, this running shoe has won the hearts of millions of customers worldwide. While the shoe may be expensive for some individuals, its unparalleled qualities make it a worthwhile choice. The On Cloudflash has certainly become the topmost choice of many professional runners.


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.

80 / 100 based on 1 expert reviews

Show moreless reviews
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Updates to On Cloudflash

  • The On Cloudflash boasts the ‘Speedboard’ technology for high cushioning and an efficient energy return. It consists of the lightweight Pebax layer which has the capability of bending flexibly according to the runner’s needs, dispersing impact loads and providing a very effective buffer system for a comfortable yet responsive ride.
  • The Low Abrasion rubber pads are placed at strategic locations on the outsole for maximum traction and higher resistance to abrasion.
  • The innovative ‘Cloudtec’ construction in the midsole offers the much popular ‘springiness’ in the shoe for a fun yet efficient ride. It is composed of tiny compressed balls, which provide the push needed for propelling forward and the support needed while landing, thereby preventing strain on back or legs and ensuring a healthy ride for the user.
  • The shoe’s upper features the Nanomesh technology which provides optimal breathability and lightest possible weight for an efficient performance on the roads. The Exoskeleton, a lightweight structure specific to the shape of the foot, adds the needed structure to the On Cloudflash.
  • The Heel Cap in the back region of the shoe holds the heel in its proper position while running, thereby preventing uncomfortable sliding of the foot inside the shoe.

On Cloudflash size and fit

The On Cloudflash fits true to size. It comes in the standard running length for both men and women and has the standard medium width of D for men and B for women respectively. Its stretchy and adaptive upper makes the shoe suitable for runners with wide feet as well.


The shoe features the ‘Speedboard’ in its outsole. According to On, the Speedboard consists of four layers and each layer serves a different purpose for the runner. The first layer enhances the shoe’s flexibility for a better landing; the second layer evenly distributes the effect of impact forces over the whole surface area; the third layer avoids the damage due to torsion, but does not limit the foot movements; and the fourth layer, the transversal grid, promotes natural gait for the runner respectively.

Together, these layers deliver a combination of unparalleled comfort, excellent flexibility, and remarkable adaptability. The lightweight yet well-cushioned Pebax platform provides a plush yet responsive ride to the runners.

The Low Abrasion rubber pads that are placed strategically in high impact zones prevent the risk of injury to the runner’s foot by ensuring the needed protection against the concentrated loads and by very increasing the shoe’s durability. 


The Cloudtec Elements in the midsole are tiny fully compressed ball-like structures which help in a solid push off the ground, thereby giving the much desired ‘springy’ feel in the midsole and reducing the impact of harsh pavements which road runners like to run upon. These elements add bounce to every step of the ride and distribute the impact forces evenly during the landing phase.


The Nanomesh technology results in an effectively thin upper capable of shredding moisture efficiently and maintaining a comfortably cool and dry environment inside the shoe.

The Exoskeleton, a lightweight metatarsal-specific design, adds structure to the upper to prevent its bulking and increases security for the runner’s foot.

The On Cloudflash houses a Heel Cap in its rear region, which keeps the heel locked down in its proper position, thereby providing the snug fit at any point or speed during the run.