Which is lighter, the Brooks Glycerin 18 or the Glycerin 19?

Neither by a meaningful margin. Both weigh about 10.2 oz in a men's US 9.

Do the Brooks Glycerin 18 and Glycerin 19 come in the same widths?

Yes. Both run in D, 2E for men's sizes, so a width that fit in the Glycerin 18 carries over to the Glycerin 19.

How do the stack heights compare?

31 mm heel and 21 mm forefoot on the Brooks Glycerin 18, against 31 mm and 21 mm on the Glycerin 19. Same platform under both.

Is the Glycerin 19 still the newest Glycerin?

No. The Glycerin 20 replaced it in 2022, so the Glycerin 19 now sells as an older model and usually below its $150 list price.

Brooks Glycerin 18 vs Glycerin 19

Updated August 3, 2026. Specs are men's US 9.

Amazon links on this page pay us a commission. It never changes your price. Details

Refined, same shoe

THE SHORT ANSWER

The Glycerin 19, by default. Amazon's Brooks Glycerin 18 stock is gone in both men's and women's sizes, so what follows is a record of what changed, not a choice you still have.

Brooks Glycerin 19Sizes running outMen's at Amazon Women's

Availability last checked Aug 3, 2026. Prices and stock change without notice.

Glycerin 18 · 2020

Glycerin 19 · 2021

Every spec, side by side

Spec	Glycerin 18	Glycerin 19
FIT AND WEIGHT
Weight	10.2 oz	10.2 oz
Widths	D, 2E	D, 2E
Upper	Double-jacquard mesh with 3D Fit Print	Engineered mesh
CUSHIONING GEOMETRY
Heel stack	31 mm	31 mm
Forefoot stack	21 mm	21 mm
Drop	10 mm	10 mm
MATERIALS
Midsole	DNA Loft	DNA Loft, softer density
	Same formula, softer tune, on a platform about 7 mm wider at heel and forefoot. Running Shoes Guru called it the softest shoe in the Brooks line.
VALUE
List price at launch	$150	$150

Weighing whether to switch at all, rather than which of these two to buy? What replaced the Brooks Glycerin 18 covers the verdict on the update, what loyalists made of it, and the closest alternatives from other brands.

Buy the Glycerin 18

Old stock gone

Amazon's stock of the Brooks Glycerin 18is gone in both men's and women's sizes, and discontinued stock does not come back.

Old stock is gone. See what replaced it

Buy the Glycerin 19

Sizes running out

Discontinued at retail. Amazon carries what remains, so treat an in-stock size as a closing window, and expect prices to swing.

Men's: Check remaining stock Women's: Check remaining stock

Availability last checked Aug 3, 2026.

Questions runners ask

Which is lighter, the Brooks Glycerin 18 or the Glycerin 19?: Neither by a meaningful margin. Both weigh about 10.2 oz in a men's US 9.
Do the Brooks Glycerin 18 and Glycerin 19 come in the same widths?: Yes. Both run in D, 2E for men's sizes, so a width that fit in the Glycerin 18 carries over to the Glycerin 19.
How do the stack heights compare?: 31 mm heel and 21 mm forefoot on the Brooks Glycerin 18, against 31 mm and 21 mm on the Glycerin 19. Same platform under both.
Is the Glycerin 19 still the newest Glycerin?: No. The Glycerin 20 replaced it in 2022, so the Glycerin 19 now sells as an older model and usually below its $150 list price.