Which is lighter, the Nike Pegasus 39 or the Pegasus 40?

The Nike Pegasus 39, by 0.3 oz in a men's US 9 (9.3 oz vs 9.6 oz).

Do the Nike Pegasus 39 and Pegasus 40 come in the same widths?

Yes. Both run in D, 2E, 4E for men's sizes, so a width that fit in the Pegasus 39 carries over to the Pegasus 40.

How do the stack heights compare?

33 mm heel and 23 mm forefoot on the Nike Pegasus 39, against 33 mm and 23 mm on the Pegasus 40. Same platform under both.

Is the Pegasus 40 still the newest Pegasus?

No. The Pegasus 41 replaced it in 2024, so the Pegasus 40 now sells as an older model and usually below its $130 list price.

Nike Pegasus 39 vs Pegasus 40

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

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Faithful successor

THE SHORT ANSWER

Whichever your size still exists in. The Pegasus 39 is discontinued at retail, so remaining pairs sell against a thinning size run, while the Pegasus 40 has a full one.

Pegasus 39 · 2022

Pegasus 40 · 2023

Every spec, side by side

Spec	Pegasus 39	Pegasus 40
FIT AND WEIGHT
Weight	9.3 oz	9.6 oz
	The comfier upper cost 0.3 oz.
Widths	D, 2E, 4E	D, 2E, 4E
Upper	Slim engineered mesh with midfoot lacing bands	Softer engineered mesh with a redesigned midfoot band
	Fixes the 39's tight midfoot without giving up lockdown.
CUSHIONING GEOMETRY
Heel stack	33 mm	33 mm
Forefoot stack	23 mm	23 mm
Drop	10 mm	10 mm
MATERIALS
Midsole	React foam with Zoom Air units under heel and forefoot	React foam with Zoom Air units under heel and forefoot
VALUE
List price at launch	$130	$130

Weighing whether to switch at all, rather than which of these two to buy? What replaced the Nike Pegasus 39 covers the verdict on the update, what loyalists made of it, and the closest alternatives from other brands.

Buy the Pegasus 39

Stocked at Amazon

Men's: Check price at Amazon Women's: Check remaining stock

Availability last checked Jul 1, 2026.

Buy the Pegasus 40

Stocked at Amazon

Men's: Check price at Amazon Women's: Check price at Amazon

Availability last checked Jul 28, 2026.

Questions runners ask

Which is lighter, the Nike Pegasus 39 or the Pegasus 40?: The Nike Pegasus 39, by 0.3 oz in a men's US 9 (9.3 oz vs 9.6 oz).
Do the Nike Pegasus 39 and Pegasus 40 come in the same widths?: Yes. Both run in D, 2E, 4E for men's sizes, so a width that fit in the Pegasus 39 carries over to the Pegasus 40.
How do the stack heights compare?: 33 mm heel and 23 mm forefoot on the Nike Pegasus 39, against 33 mm and 23 mm on the Pegasus 40. Same platform under both.
Is the Pegasus 40 still the newest Pegasus?: No. The Pegasus 41 replaced it in 2024, so the Pegasus 40 now sells as an older model and usually below its $130 list price.