Buyer's Guide

On Running Buyer’s Guide | Award winning trainer brand to know…

On is an award-winning trainer brand that is a favourite amongst the biggest athletes. Creating the ultimate running trainers, they are renowned for their innovative technology, scientific engineering and sustainable approach. Up there with the best running trainers in the world, here is our On running trainers guide covering everything you need to know about the brand…

On running


About the brand

On was the brainchild of professional, three-time world duathlon champion and multiple Ironman winner, Olivier Bernhard. His retirement mission was to create the perfect running trainer with the idea that a cushioned landing but firm take-off would create the perfect running sensation.  

It was this idea that convinced friends Caspar Coppetti and David Allemann to join him in launching the On brand in January 2010. From small beginnings in Zürich, Switzerland they set out to change the world of running. 

On founders


Are On Sustainable?

Sustainability has always been a core brand value for On, they see that performance and sustainability go hand in hand, using innovation to create sustainable solutions. Born in the swiss alps, sustainability is deeply rooted in the founder’s personal values due to their huge appreciation for the natural world. Their ethos is shared with everyone in their company with all of their team contributing to their sustainable goals. 

As they are a small business their strategy is to focus on getting the basics right and focus on the areas that will have the most impact. This is one of their most recent projects… 

The CleanCloud

CleanCloud is the new high-performance foam for running shoes, reshaping carbon waste into raw material. Collaborating with a supply chain coalition in cooperation with LanzaTech and Borealis. 

  • The process starts with LanzaTach capturing carbon emissions from industrial sources. 
  • Then they convert emissions into liquid ethanol using a fermentation process. 
  • The ethanol is then dehydrated turning it into ethylene gas, which is then polymerized by Borealis to create EVA pellets. 
  • ON then uses this EVA to engineer high-performance foam cushioning for running shoes: CleanCloud. 

The difference between the Cloud 5 trainer and Cloudnova trainer?

The Cloud 5 is a road running trainer that is designed for soft landings and powerful push-offs allowing you to go the extra distance. The trainer is made from 44% recycled lightweight, breathable materials making it easy to wear and easy on the environment.

On running


This style is an everyday running trainer that has been re-engineered for an improved fit and comfort. Key design features include the speed lacing system instantly locking you in, meaning you never waste any time sorting your laces.

The Cloudnova is a new performance-led design, combining responsive comfort and urban energy that you can last in all day. The trainer has an inner sock design providing support and comfort with a padded heel and customized lace configuration. The rubber reinforcements support your foot’s natural rolling motion and the tongue provides a great fit. 

On running trainers


Comparing the two styles, the Cloud 5 has speed laces whereas the Cloudnova has standard laces. The Cloud 5 is better in warmer conditions whereas the Cloudnova will be better in colder climates. Both trainers are perfect for everyday wear, exploring, exercising and travel. The Cloudnova is the heavier trainer with a slightly smaller heel depth.

What’s the difference between Cloudswift and Cloud 5 on running trainers?

We wanted to compare these two styles due to an increase in popularity. However, these trainers are being worn as everyday trainers and not just for high-performance workouts or running. Watch our YouTube video giving you all the details.

Why are the On Cloudmonster the best running trainers?

On’s, Cloudmonster trainers are designed to provide the best results from your running experience. They are made from lightweight and temperature-regulating mesh, offering comfort during your workout. With the biggest Speedboard® technology yet they provide advanced soles’ flexibility, which results in extremely soft landings and maximum rebound propelling you forward.

If you are looking to invest in a pair of the most sought-after running trainers getting the right size is key so use the size guides to help you… 

Size Guides

Men’s size chart 


7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13



40 40.5 41 42 42.5 43 44 44.5 45 46 47 47.5 48



6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 



25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 30.5 31



37.5 38 39 39.5 40 41 41.5 42 42.5 43 44 45 46


Women’s size chart 


5 5.5 6 6.5



8 8.5 9 9.5 10  10.5



36 36.5 37  37.5 38



40 40.5 41 42 42.5



3 3.5 4 4.5 5



6.5 7 7.5 8 8.5



22 22.5 23 23.5 24



25.5 26 26.6 27 27.5



33.5 34



36 37 37.5 38 39 39.5 40 40.5


Who wears On running trainers?

On has a huge cult following amongst professional athletes and sports people. Five-time Olympian, two-time Olympic medallist and six-time European champion Nicola Spirig has been wearing the brand since its early beginnings.

Similar to professional triathletes such as Tim Don and Matt Hanson who are both Ironman record-holders and between them have x7 world championships. 

On running trainers

Emmanuel Chivo Lubezki for Variety Magazine @ukmoviesyahoo

The brand is also well-known among producers, actors, and many other professionals. Its strong core brand values and innovative design have made this a trusted brand to buy into. Emmanuel Chivo Lubezki proudly wore his ‘go-to’ shoe on the cover of Variety magazine when he won an oscar for the production of The Revenant.


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Written by Holly Thompson

Holly Thompson

Holly Thompson

Writer and expert