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Brooks Adrenaline GTS 21

Discontinued · road · Daily / Long run · $120

Earlier generation of the Brooks Adrenaline GTS line, kept for replacement lookups.

Built for daily, long run, at a target pace of 8:30–11:30 /mi on road.

This model is no longer in production. The closest shoe you can buy today is Brooks Adrenaline GTS 24.

The spec sheet

Weight
301 g / 10.6 oz
Heel stack
33 mm
Drop
12 mm
Plate
—
Cushioning
3 / 5
Energy return
2 / 5
Responsiveness
2 / 5
Rocker
1 / 5
Flexibility
3 / 5
Stability
5 / 5 (5 = most guidance)
Toe-box
Standard
Sizing
True to size
Durability
~500 mi
Price
$120

How it rides

The foam

Brooks tuned this midsole balanced (3/5 on our cushioning scale). Energy return is modest, so the ride feels protective and damp rather than springy. 33 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 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 12 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. It offers real guidance through the gait cycle — useful for runners whose form collapses when tired.

Fit, sizing & life

The toe-box is standard width — comfortable for most feet without swimming. It fits true to size. Expect roughly 500 miles from the outsole, about $0.24 per mile at $120.

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

301 g / 10.6 oz

26 g heavier than the catalog median of 275 g

Heel stack

33 mm

3 mm lower than the catalog median of 36 mm

Drop

12 mm

6 mm higher than the catalog median of 6 mm

Price

$120

40 cheaper than the catalog median of 160

Responsiveness

2 / 5

Catalog median 3 / 5

Cushioning

3 / 5

Catalog median 4 / 5

Energy return

2 / 5

Catalog median 3 / 5

Durability

~500 mi

Catalog median ~400 mi

Within the Brooks line it is heavier than the brand's median (283 g / 10.0 oz) and sits lower than its median stack (36 mm).

Closest alternatives

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

Adidas Runfalcon 5

303 g / 10.7 oz · 33 mm · 10 mm drop · — · $70

Sub-$70 starter shoe for short runs and gym duty.

Adidas Duramo Protect

290 g / 10.2 oz · 32 mm · 10 mm drop · — · $90

Weatherized Duramo for wet-weather road and path miles.

Nike Run Defy

295 g / 10.4 oz · 33 mm · 10 mm drop · — · $80

Simple, durable budget trainer for everyday road miles.

Nike Revolution 8

270 g / 9.5 oz · 33 mm · 10 mm drop · — · $70

Nike's cheapest running shoe: soft foam, simple build, gentle miles.

Nike Quest 6

295 g / 10.4 oz · 35 mm · 10 mm drop · — · $85

Entry-level daily trainer with a soft midsole and a secure fit.

Lineage & siblings