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Hard-hitting trail running shoe delivers high energy return and impressive cushioning – even hours into your mission.
Hard-hitting trail running shoe delivers high energy return and impressive cushioning – even hours into your mission.
On Running

On Running Cloudultra 3 Men's Running shoe in Black

£170.00
Size Guide
On Running Cloudultra 3 Men's Running shoe in Cinder/Pearl
Pre-Order

With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined

On Running Cloudultra 3 Men's Running shoe in Black

Season:2025

Brand:On Running

Code:3MF30231043

  • Weight: 295g

  • Helion™ HF hyper foam dual midsole for high energy return

  • Redesigned Missiongrip™ outsole – our most advanced yet

  • Performance engineered using FEA (Finite Element Analysis)

  • Lug geometry for traction and grip on technical terrain

  • Breathable quick-dry Leno weave upper with engineered zoning

  • Engineered rocker to maximize running efficiency

  • With cutting-edge technology for long-distance trail running

  • To take on rugged and mountainous technical trail terrain

Hours of energy

Smart tech to power your longest trail runs. Engineered to keep you feeling fresh even after several hours on the trail, the Cloudultra 3 delivers maximized energy return with ample cushioning thanks to a Helion™ HF hyperfoam midsole. So you can go, go, go.

Durable upper

It's as tough as it looks. The shoe features an engineered Leno weave upper which is highly durable and abrasion-resistant in zoned sections, as well as being breathable and quick drying. Giving your feet everything they need to complete the mission.

Advanced grip

Meet our most advanced grip – ever. Featuring an updated Missiongrip™ outsole with a new lug profile developed with FEA (Finite Element Analysis). For unparalled grip and traction.


Terrain

Technical terrain

Cushioning

Plush

Heel to toe drop

6mm

Sizing Information

On models are straight forward. In most cases, you just take the same size as your current shoes.

Should you wish to compare with another running shoe brand, please use below guide to clarify your size.

EUR

40

40.5

41

42

42.5

43

44

44.5

45

46

47

47.5

48

49

US

7

7.5

8

8.5

9

9.5

10

10.5

11

11.5

12

12.5

13

14

UK

6.5

7

7.5

8

8.5

9

9.5

10

10.5

11

11.5

12

12.5

13.5

JPN(CM)

25

25.5

26

26.5

27

27.5

28

28.5

29

29.5

30

30.5

31

31.5

 

Compare On sizes with other shoes

On size

Adidas

Go the same

ASICS

Go half a size smaller

Brooks

Go the same

HOKA ONE

Go the same

Nike

Go the same

Nike Flyknit

Go half a size smaller

Mizuno

Go the same

Saucony

Go the same

 

Size Guide - Men's Socks

Size

EU

UK

US

S

40-41

6.5-7.5

7-8

M

42-43

8-9

8.5-9.5

L

44-45

9.5-10.5

10-11

XL

46-47

11-12

11.5-12.5

XXL

48-49

12.5-13.5

13-14

 

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