Which is lighter, the Asics Gel-Nimbus 24 or the Gel-Nimbus 25?

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

Do the Asics Gel-Nimbus 24 and Gel-Nimbus 25 come in the same widths?

Yes. Both run in D, 2E, 4E for men's sizes, so a width that fit in the Gel-Nimbus 24 carries over to the Gel-Nimbus 25.

How do the stack heights compare?

26 mm heel and 16 mm forefoot on the Asics Gel-Nimbus 24, against 41.5 mm and 33.5 mm on the Gel-Nimbus 25. That is 15.5 mm more under the heel and 17.5 mm more under the forefoot. See the stack height note in the table above: the published figures changed convention mid-lineage.

Is the Gel-Nimbus 25 still the newest Gel-Nimbus?

No. The Gel-Nimbus 26 replaced it in 2024, so the Gel-Nimbus 25 now sells as an older model and usually below its $160 list price.

Asics Gel-Nimbus 24 vs Gel-Nimbus 25

Updated July 28, 2026. Specs are men's US 9.

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Changed character

THE SHORT ANSWER

The Gel-Nimbus 25, by default. Amazon's Asics Gel-Nimbus 24 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.

Gel-Nimbus 24 · 2022

Gel-Nimbus 25 · 2023

Every spec, side by side

Spec	Gel-Nimbus 24	Gel-Nimbus 25
FIT AND WEIGHT
Weight	10.2 oz	10.2 oz
Widths	D, 2E, 4E	D, 2E, 4E
Upper	Engineered mesh	Stretch engineered knit with a knit collar and gusseted knit tongue
	The collar and a snugger, tapered toebox were the flashpoints for long-time wearers.
CUSHIONING GEOMETRY
Heel stack	26 mm	41.5 mm
	The conventions differ; the real gain is roughly 4 mm at the heel and 6 mm at the forefoot. Still a much taller shoe.
Forefoot stack	16 mm	33.5 mm
Drop	10 mm	8 mm
MATERIALS
Midsole	FF Blast+ foam with a GEL heel; no Trusstic	FF Blast+ Eco foam with a PureGEL heel insert
	About 20 percent more foam underfoot, and the visible GEL window is gone.
VALUE
List price at launch	$160	$160
OTHER CHANGES
Drop	10 mm	8 mm

Weighing whether to switch at all, rather than which of these two to buy? What replaced the Asics Gel-Nimbus 24 covers the verdict on the update, what loyalists made of it, and the closest alternatives from other brands.

Buy the Gel-Nimbus 24

Old stock gone

Amazon's stock of the Asics Gel-Nimbus 24is 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 Gel-Nimbus 25

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 Jul 28, 2026.

Questions runners ask

Which is lighter, the Asics Gel-Nimbus 24 or the Gel-Nimbus 25?: Neither by a meaningful margin. Both weigh about 10.2 oz in a men's US 9.
Do the Asics Gel-Nimbus 24 and Gel-Nimbus 25 come in the same widths?: Yes. Both run in D, 2E, 4E for men's sizes, so a width that fit in the Gel-Nimbus 24 carries over to the Gel-Nimbus 25.
How do the stack heights compare?: 26 mm heel and 16 mm forefoot on the Asics Gel-Nimbus 24, against 41.5 mm and 33.5 mm on the Gel-Nimbus 25. That is 15.5 mm more under the heel and 17.5 mm more under the forefoot. See the stack height note in the table above: the published figures changed convention mid-lineage.
Is the Gel-Nimbus 25 still the newest Gel-Nimbus?: No. The Gel-Nimbus 26 replaced it in 2024, so the Gel-Nimbus 25 now sells as an older model and usually below its $160 list price.