Which is lighter, the Brooks Cascadia 17 or the Cascadia 18?

The Cascadia 18, by 0.4 oz in a men's US 9 (10.9 oz vs 11.3 oz).

Do the Brooks Cascadia 17 and Cascadia 18 come in the same widths?

Yes. Both run in D, 2E for men's sizes, so a width that fit in the Cascadia 17 carries over to the Cascadia 18.

How do the stack heights compare?

33 mm heel and 25 mm forefoot on the Brooks Cascadia 17, against 33 mm and 25 mm on the Cascadia 18. Same platform under both.

Is the Cascadia 18 still the newest Cascadia?

No. The Cascadia 19 replaced it in 2025, so the Cascadia 18 now sells as an older model and usually below its $140 list price.

Brooks Cascadia 17 vs Cascadia 18

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

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Faithful successor

THE SHORT ANSWER

Whichever your size still exists in. The Cascadia 17 is discontinued at retail, so remaining pairs sell against a thinning size run, while the Cascadia 18 has a full one.

Brooks Cascadia 17Sizes running outMen's at Amazon
Brooks Cascadia 18Sizes running outMen's at Amazon Women's

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

Cascadia 17 · 2023

Cascadia 18 · 2024

Every spec, side by side

Spec	Cascadia 17	Cascadia 18
FIT AND WEIGHT
Weight	11.3 oz	10.9 oz
	Mixed measurers again (Doctors of Running's men's 9 against RunRepeat's): on RunRepeat's own scale the drop was 11.6 to 10.9, so the 18 did genuinely walk back some of the 17's gain.
Widths	D, 2E	D, 2E
Upper	Engineered mesh with a flexible heel collar	Lightweight engineered mesh with thermoplastic overlays
	The only visible change of the generation, and it split the one panel that scored it: one Believe in the Run tester called the fit atrocious while another called the same shoe an excellent fit for hikers.
CUSHIONING GEOMETRY
Heel stack	33 mm	33 mm
Forefoot stack	25 mm	25 mm
Drop	8 mm	8 mm
MATERIALS
Midsole	DNA Loft v2	DNA Loft v2
	Unchanged for the third consecutive generation, and by 2024 that was the story. Believe in the Run accused Brooks of shipping the exact shoe as last year, and RunRepeat flagged noticeable durability issues in the upper alongside the stale foam.
Plate	Trail Adapt plate	Trail Adapt plate
VALUE
List price at launch	$140	$140

Weighing whether to switch at all, rather than which of these two to buy? What replaced the Brooks Cascadia 17 covers the verdict on the update, what loyalists made of it, and the closest alternatives from other brands.

Buy the Cascadia 17

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 Sep 10, 2026.

Buy the Cascadia 18

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 Sep 10, 2026.

Questions runners ask

Which is lighter, the Brooks Cascadia 17 or the Cascadia 18?: The Cascadia 18, by 0.4 oz in a men's US 9 (10.9 oz vs 11.3 oz).
Do the Brooks Cascadia 17 and Cascadia 18 come in the same widths?: Yes. Both run in D, 2E for men's sizes, so a width that fit in the Cascadia 17 carries over to the Cascadia 18.
How do the stack heights compare?: 33 mm heel and 25 mm forefoot on the Brooks Cascadia 17, against 33 mm and 25 mm on the Cascadia 18. Same platform under both.
Is the Cascadia 18 still the newest Cascadia?: No. The Cascadia 19 replaced it in 2025, so the Cascadia 18 now sells as an older model and usually below its $140 list price.