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On Cloudboom

Discontinued · road · Race day · $200

On's first carbon racer — firm and snappy rather than soft.

Built for race day, at a target pace of 5:30–7:15 /mi on road.

This model is no longer in production. The closest shoe you can buy today is On Cloudboom Strike.

The spec sheet

Weight
225 g / 7.9 oz
Heel stack
32 mm
Drop
9 mm
Plate
Carbon
Cushioning
3 / 5
Energy return
4 / 5
Responsiveness
5 / 5
Rocker
3 / 5
Flexibility
2 / 5
Stability
2 / 5 (5 = most guidance)
Toe-box
Narrow
Sizing
Size up ½
Durability
~200 mi
Price
$200

How it rides

The foam

On tuned this midsole balanced (3/5 on our cushioning scale). Energy return is above average: the midsole rebounds well without feeling unstable. 32 mm of heel stack is the modern daily-trainer sweet spot — enough foam for long miles without losing contact with the road. Combined, the ride reads as explosive at 5/5 responsiveness.

The plate

A full-length carbon plate stiffens the forefoot and works with the foam as a lever: it smooths the transition off the toes and cuts the effort of holding fast paces. It also asks for speed — at easy paces a carbon plate feels stiff and does little for you, and it is the main reason super-shoes wear out sooner than trainers.

The geometry

A tall 9 mm drop tips weight forward off the heel, which usually suits heel strikers and calves that dislike low-drop shoes. The rocker is moderate — enough curve to smooth the roll-through without dictating your footstrike. The forefoot is stiff, so it rolls rather than bends — a lever, not a slipper. It is a neutral platform with no built-in correction.

Fit, sizing & life

The toe-box is narrow and performance-oriented; wide-footed runners should try before buying. It runs small; most runners size up a half. Expect roughly 200 miles from the outsole, about $1.00 per mile at $200.

For the foams and plates On uses across its line, read the On brand guide.

How it compares

Measured against the 542 currently-available shoes in the catalog. The bar shows where this shoe sits in that range.

Weight

225 g / 7.9 oz

50 g lighter than the catalog median of 275 g

Heel stack

32 mm

4 mm lower than the catalog median of 36 mm

Drop

9 mm

3 mm higher than the catalog median of 6 mm

Price

$200

40 pricier than the catalog median of 160

Responsiveness

5 / 5

Catalog median 3 / 5

Cushioning

3 / 5

Catalog median 4 / 5

Energy return

4 / 5

Catalog median 3 / 5

Durability

~200 mi

Catalog median ~400 mi

Within the On line it is lighter than the brand's median (270 g / 9.5 oz) and sits lower than its median stack (34 mm).

Closest alternatives

Current shoes with the nearest combination of weight, stack, drop, foam feel and plate.

On Cloudboom Echo 3

225 g / 7.9 oz · 37 mm · 9 mm drop · Carbon · $290

Carbon marathon racer with a rockered, aggressive toe-off.

Brooks Hyperion 2(2024)

201 g / 7.1 oz · 32 mm · 8 mm drop · — · $140

Light, firm and fast — a plateless racer for shorter distances.

Asics Hyper Speed 4

210 g / 7.4 oz · 32 mm · 7 mm drop · — · $100

Budget racer: light, simple and fast enough for 5Ks on a dime.

Salomon S/Lab Spectur

232 g / 8.2 oz · 38 mm · 8 mm drop · Carbon · $220

Stability-minded carbon super shoe aimed at 3:30-and-up marathoners.

New Balance FuelCell SuperComp Pacer v3

190 g / 6.7 oz · 32 mm · 6 mm drop · Carbon · $180

Short-course carbon racer for 5K to half marathon.

Lineage & siblings