Who should buy the Cloudboom Echo

Buy it if you: 

  • want to run fast in anything under 10k 
  • prefer firmer shoes 

On Cloudboom Echo on-cloudboom-front

Who should NOT buy it

DON'T buy it if you:

  • want a marathon speedster
  • have wide feet
  • need an all-rounder

On Cloudboom Echo: Fast and stable ride

The Cloudboom Echo's drop and firm carbon-infused Speedboard provide an "extra kick" that allows a snappy toe-off. The shoe's dense construction also makes it very supportive, runners claim it's more stable than most carbon-plated racers

On Cloudboom Echo on-cloudboom-laces

Lockdown fit

It's snug from the heel to the midfoot. They highly appreciate it, especially when moving at top speed. In the forefoot, there's enough room for the toes to splay and wiggle. 

Race-shoe light

Its weight is barely noticeable, which is always a plus for race shoes. At 7.8 oz (US M 9), it's in the ranks of the Brooks Hyperion Elite 2 (7.5 oz) and Hoka Rocket X (7.4 oz). 

On Cloudboom Echo on-cloudboom-side


Droves of reviewers find the mesh upper "insanely airy." Even under hot conditions, their feet remained sweat-free and cool. 

Fashion-forward design

"Artists' choice," "simple yet sleek," and "stylish" — this is how many testers find the shoe's design. According to them, the colorway gives the shoe a high-end touch.  

On Cloudboom Echo on-cloudboom-heel collar

On Cloudboom Echo: One heck of an expensive shoe

At $270, expert reviewers find its price "way too much." If you're willing to pay a premium, they advise going for the Alphafly or the MetaSpeed Sky instead. They can go the distance and will save your legs. And if you want a softer, more versatile option, they recommend the New Balance RC Elite v2.  

Not for wide feet

The upper is a wee bit tight and can be uncomfortable for runners with large feet. 

On Cloudboom Echo on-cloudboom-midsole

Firm ride

It's NOT comfortable at all. Race shoes are dense, but the Cloudboom Echo is overkill. All you can feel underfoot is the rigid plate and zero cushion. Testers warn against using it for marathons because it will "chew up" the legs. 

Slippery outsole

There's minimal rubber on the outsole. Road runners have found themselves slipping, especially on slick surfaces.

On Cloudboom Echo vs. On Cloudboom

The Cloudboom Echo is supposed to be On's redemption for its lackluster Cloudboom model. It's designed as a marathon racer, and to do so, the brand has introduced some tweaks like: 

Weight loss: It has dropped a few grams to increase speed. 

Higher stack: This tweak gives more room to the carbon-infused plate to curve for a more seamless transition and a more rockered feel. 

However, as a long-distance racing flat, it leaves something to be desired. It may be better than its precursor in terms of speed, but it certainly is not the marathon shoe it's supposed to be. 

A step towards sustainability

To decrease their waste, On Running created the shoe's engineered mesh upper using 100% recycled materials. 

Facts / Specs

Terrain: Road
Weight: Men 7.8oz / Women 6.7oz
Drop: Men 8mm
Arch support: Neutral
Base model: On Cloudboom
Forefoot height: Men 27mm
Heel height: Men 35mm

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Jens Jakob Andersen
Jens Jakob Andersen

Jens Jakob is a fan of short distances with a 5K PR at 15:58 minutes. Based on 35 million race results, he's among the fastest 0.2% runners. Jens Jakob previously owned a running store, when he was also a competitive runner. His work is regularly featured in The New York Times, Washington Post, BBC and the likes as well as peer-reviewed journals. Finally, he has been a guest on +30 podcasts on running.