Can I go straight from the Nike Pegasus 37 to the Pegasus 39 and skip the Pegasus 38?

Yes. Going Pegasus 37 to Pegasus 39 skips the Pegasus 38, and neither update changed the ride, so you land on the same shoe two refinements later. The midsole is the one real difference: React foam with a forefoot Zoom Air unit to React foam with Zoom Air units under heel and forefoot.

How much did the weight change across these two updates?

0.7 oz off in total, 10 oz to 9.3 oz in a men's US 9. The Pegasus 38 took it to 10.2 oz first.

Is the Pegasus 38 the better buy than either of these?

On paper it splits them: 10.2 oz against 10 oz for the Pegasus 37 and 9.3 oz for the Pegasus 39, on a 28 mm heel and a $120 list price. Whether that is worth chasing depends on what the Pegasus 38 update actually did, which the section above works through.

Did the Pegasus get taller between the Pegasus 37 and the Pegasus 39?

Heel stack went 28 mm to 33 mm, by way of 28 mm on the Pegasus 38. Drop held at 10 mm throughout, so the extra foam sits under both ends.

Where does the Pegasus 39 sit in the Pegasus lineup now?

Two versions on from the Pegasus 37, and already replaced itself: the Pegasus 40 arrived in 2023. If you are shopping old stock anyway, price the Pegasus 39 against it before deciding.

Nike Pegasus 37 vs Pegasus 39

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 Nike Pegasus 37 from the Pegasus 39. Net change: 0.7 oz lighter, 5 mm more heel stack, a new midsole, $10 more at list. Neither update in between changed what the Pegasus is, so this is the same shoe refined twice rather than a new one.

Nike Pegasus 39Men's at Amazon Women's

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

Pegasus 37 · 2020

Pegasus 39 · 2022

The two updates in between

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

Step 1Pegasus 37 to Pegasus 382021Faithful successor
Pegasus 37 vs 38 What replaced the Nike Pegasus 37?
Step 2Pegasus 38 to Pegasus 392022Refined, same shoe
Pegasus 38 vs 39 What replaced the Nike Pegasus 38?

Pegasus 37 vs Pegasus 39: 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	Pegasus 37	Pegasus 39
FIT AND WEIGHT
Weight	10 oz	9.3 oz
Widths	D, 2E, 4E	D, 2E, 4E
Upper	Thin translucent engineered mesh with a racing-style tongue	Slim engineered mesh with midfoot lacing bands
CUSHIONING GEOMETRY
Heel stack	28 mm	33 mm
Forefoot stack	18 mm	23 mm
Drop	10 mm	10 mm
MATERIALS
Midsole	React foam with a forefoot Zoom Air unit	React foam with Zoom Air units under heel and forefoot
VALUE
List price at launch	$120	$130

Or buy the Pegasus 38 instead?

The Pegasus 38 is the value play if you find it discounted. It carries most of what the Pegasus 39 added while selling as an older model, and moving one version at a time is the smaller adjustment.

Buy the Pegasus 38

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 stock is gone.

Availability last checked Jul 1, 2026.

Questions runners ask

Can I go straight from the Nike Pegasus 37 to the Pegasus 39 and skip the Pegasus 38?: Yes. Going Pegasus 37 to Pegasus 39 skips the Pegasus 38, and neither update changed the ride, so you land on the same shoe two refinements later. The midsole is the one real difference: React foam with a forefoot Zoom Air unit to React foam with Zoom Air units under heel and forefoot.
How much did the weight change across these two updates?: 0.7 oz off in total, 10 oz to 9.3 oz in a men's US 9. The Pegasus 38 took it to 10.2 oz first.
Is the Pegasus 38 the better buy than either of these?: On paper it splits them: 10.2 oz against 10 oz for the Pegasus 37 and 9.3 oz for the Pegasus 39, on a 28 mm heel and a $120 list price. Whether that is worth chasing depends on what the Pegasus 38 update actually did, which the section above works through.
Did the Pegasus get taller between the Pegasus 37 and the Pegasus 39?: Heel stack went 28 mm to 33 mm, by way of 28 mm on the Pegasus 38. Drop held at 10 mm throughout, so the extra foam sits under both ends.
Where does the Pegasus 39 sit in the Pegasus lineup now?: Two versions on from the Pegasus 37, and already replaced itself: the Pegasus 40 arrived in 2023. If you are shopping old stock anyway, price the Pegasus 39 against it before deciding.