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Adidas Ultraboost Uncaged

Discontinued · road · Daily / Recovery · $180

The cage-free Ultraboost: sock-like Primeknit over full Boost.

Built for daily, recovery, at a target pace of 9:00–12:00 /mi on road.

This model is no longer in production. The closest shoe you can buy today is Adidas Ultraboost 5.

The spec sheet

Weight
300 g / 10.6 oz
Heel stack
28 mm
Drop
10 mm
Plate
—
Cushioning
4 / 5
Energy return
3 / 5
Responsiveness
2 / 5
Rocker
2 / 5
Flexibility
3 / 5
Stability
3 / 5 (5 = most guidance)
Toe-box
Standard
Sizing
True to size
Durability
~450 mi
Price
$180

How it rides

The foam

Adidas tuned this midsole soft (4/5 on our cushioning scale). Energy return is moderate — comfortable and predictable rather than bouncy. 28 mm of heel stack keeps you low and connected, with more ground feel than most current trainers. Combined, the ride reads as calm at 2/5 responsiveness.

The plate

There is no plate here. The midsole does all the work, so the shoe flexes naturally and stays versatile across paces — easier on the feet day to day, but without the snap of a plated shoe when you want to roll.

The geometry

A tall 10 mm drop tips weight forward off the heel, which usually suits heel strikers and calves that dislike low-drop shoes. The geometry is fairly traditional and flat, so the shoe follows your foot rather than steering it. Forefoot flex is middle of the road. Support is light — neutral, with a mildly steady platform.

Fit, sizing & life

The toe-box is standard width — comfortable for most feet without swimming. It fits true to size. Expect roughly 450 miles from the outsole, about $0.40 per mile at $180.

For the foams and plates Adidas uses across its line, read the Adidas 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

300 g / 10.6 oz

25 g heavier than the catalog median of 275 g

Heel stack

28 mm

8 mm lower than the catalog median of 36 mm

Drop

10 mm

4 mm higher than the catalog median of 6 mm

Price

$180

20 pricier than the catalog median of 160

Responsiveness

2 / 5

Catalog median 3 / 5

Cushioning

4 / 5

Catalog median 4 / 5

Energy return

3 / 5

Catalog median 3 / 5

Durability

~450 mi

Catalog median ~400 mi

Within the Adidas line it is heavier than the brand's median (278 g / 9.8 oz) and sits lower than its median stack (35 mm).

Closest alternatives

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

Brooks Adrenaline GTS 25(2025)

300 g / 10.6 oz · 37 mm · 10 mm drop · — · $145

GuideRails support in a softer, smoother 25th edition.

On Cloudflyer 5

320 g / 11.3 oz · 31 mm · 10 mm drop · — · $170

On's gentle-stability trainer with a wide, guided base.

Asics GT-4000 4

310 g / 10.9 oz · 36 mm · 10 mm drop · — · $140

Maximum-support trainer for overpronators who want cushion and control.

Nike Structure 26(2024)

298 g / 10.5 oz · 38 mm · 10 mm drop · — · $140

Wide base and firmer sidewalls — Nike's mainstream support trainer.

Adidas Supernova Rise 2(2025)

266 g / 9.4 oz · 33 mm · 10 mm drop · — · $140

Dreamstrike+ daily miles — soft, simple, unremarkable in a good way.

Lineage & siblings