Can I go straight from the Asics Gel-Cumulus 21 to the Gel-Cumulus 23 and skip the Gel-Cumulus 22?

Yes. Going Gel-Cumulus 21 to Gel-Cumulus 23 skips the Gel-Cumulus 22, and neither update changed the ride, so you land on the same shoe two refinements later. The midsole is the one real difference: FlyteFoam with rearfoot and forefoot GEL units to Full-length FlyteFoam with a rearfoot GEL unit.

How much did the weight change across these two updates?

0.2 oz off in total, 10.1 oz to 9.9 oz in a men's US 9. Almost all of it came in the second update; the Gel-Cumulus 22 weighed 10.1 oz.

Is the Gel-Cumulus 22 the better buy than either of these?

On paper it splits them: 10.1 oz against 10.1 oz for the Gel-Cumulus 21 and 9.9 oz for the Gel-Cumulus 23, on a 23 mm heel and a $120 list price. Whether that is worth chasing depends on what the Gel-Cumulus 22 update actually did, which the section above works through.

Did the Gel-Cumulus get taller between the Gel-Cumulus 21 and the Gel-Cumulus 23?

Heel stack went 29 mm to 23 mm, by way of 23 mm on the Gel-Cumulus 22. Drop held at 10 mm throughout, so the extra foam sits under both ends.

Where does the Gel-Cumulus 23 sit in the Gel-Cumulus lineup now?

Two versions on from the Gel-Cumulus 21, and already replaced itself: the Gel-Cumulus 24 arrived in 2022. If you are shopping old stock anyway, price the Gel-Cumulus 23 against it before deciding.

Asics Gel-Cumulus 21 vs Gel-Cumulus 23

Two versions apart. Updated September 10, 2026. Specs are men's US 9.

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THE SHORT ANSWER

Two updates and 2 years separate the Asics Gel-Cumulus 21 from the Gel-Cumulus 23. Net change: 0.2 oz lighter, 6 mm less heel stack, a new midsole. Neither update in between changed what the Gel-Cumulus is, so this is the same shoe refined twice rather than a new one.

Asics Gel-Cumulus 21Sizes running outMen's at Amazon
Asics Gel-Cumulus 23Sizes running outMen's at Amazon Women's

Availability last checked Sep 10, 2026. Prices and stock change without notice.

Gel-Cumulus 21 · 2019

Gel-Cumulus 23 · 2021

The two updates in between

Each step has its own page with the full change list and the verdict on that update.

Step 1Gel-Cumulus 21 to Gel-Cumulus 222020Faithful successor
Gel-Cumulus 21 vs 22 What replaced the Asics Gel-Cumulus 21?
Step 2Gel-Cumulus 22 to Gel-Cumulus 232021Refined, same shoe
Gel-Cumulus 22 vs 23 What replaced the Asics Gel-Cumulus 22?

Gel-Cumulus 21 vs Gel-Cumulus 23: every spec, side by side

The net of both updates. Per-update change notes stay on the step pages above, because they explain changes measured from a different starting point than this table uses.

Spec	Gel-Cumulus 21	Gel-Cumulus 23
FIT AND WEIGHT
Weight	10.1 oz	9.9 oz
Widths	D, 2E, 4E	D, 2E, 4E
Upper	Engineered mesh with a padded tongue and heel collar	Lighter engineered mesh with improved ventilation
CUSHIONING GEOMETRY
Heel stack	29 mm	23 mm
Forefoot stack	19 mm	13 mm
Drop	10 mm	10 mm
MATERIALS
Midsole	FlyteFoam with rearfoot and forefoot GEL units	Full-length FlyteFoam with a rearfoot GEL unit
VALUE
List price at launch	$120	$120

Or buy the Gel-Cumulus 22 instead?

The Gel-Cumulus 22 is the value play if you find it discounted. It carries most of what the Gel-Cumulus 23 added while selling as an older model, and moving one version at a time is the smaller adjustment.

Buy the Gel-Cumulus 22

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 stock is gone.

Women's: Check remaining stock

Availability last checked Sep 10, 2026.

Questions runners ask

Can I go straight from the Asics Gel-Cumulus 21 to the Gel-Cumulus 23 and skip the Gel-Cumulus 22?: Yes. Going Gel-Cumulus 21 to Gel-Cumulus 23 skips the Gel-Cumulus 22, and neither update changed the ride, so you land on the same shoe two refinements later. The midsole is the one real difference: FlyteFoam with rearfoot and forefoot GEL units to Full-length FlyteFoam with a rearfoot GEL unit.
How much did the weight change across these two updates?: 0.2 oz off in total, 10.1 oz to 9.9 oz in a men's US 9. Almost all of it came in the second update; the Gel-Cumulus 22 weighed 10.1 oz.
Is the Gel-Cumulus 22 the better buy than either of these?: On paper it splits them: 10.1 oz against 10.1 oz for the Gel-Cumulus 21 and 9.9 oz for the Gel-Cumulus 23, on a 23 mm heel and a $120 list price. Whether that is worth chasing depends on what the Gel-Cumulus 22 update actually did, which the section above works through.
Did the Gel-Cumulus get taller between the Gel-Cumulus 21 and the Gel-Cumulus 23?: Heel stack went 29 mm to 23 mm, by way of 23 mm on the Gel-Cumulus 22. Drop held at 10 mm throughout, so the extra foam sits under both ends.
Where does the Gel-Cumulus 23 sit in the Gel-Cumulus lineup now?: Two versions on from the Gel-Cumulus 21, and already replaced itself: the Gel-Cumulus 24 arrived in 2022. If you are shopping old stock anyway, price the Gel-Cumulus 23 against it before deciding.