Adidas Adizero Adios vs Saucony Endorphin Speed
Comparing the current Adizero Adios 9 and Endorphin Speed 6. Specs are men's US 9.
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THE SHORT ANSWER
The Adizero Adios 9 is the lighter shoe by 1.6 oz in a men's US 9, and the drop is within 1 mm (7 mm on the Adizero Adios 9, 8 mm on the Endorphin Speed 6), so it is the one that feels quicker without asking your stride to change. Both sit in the same role (tempo). The Adizero Adios 9 lists $35 lower.
- Adidas Adizero Adios 9Sizes running outMen's at AmazonWomen's
- Saucony Endorphin Speed 6Stock unverifiedMen's at AmazonWomen's
Availability last checked Sep 10, 2026. Prices and stock change without notice.
Every spec, side by side
| Spec | Adizero Adios 9 | Endorphin Speed 6 |
|---|---|---|
| FIT AND WEIGHT | ||
| Weight | 6.2 oz | 7.8 oz |
| Widths | D | D, 2E |
| Upper | One-way stretch mesh with a Lightlock band and Slinglaunch heel wrap | Lightweight engineered mesh |
| CUSHIONING GEOMETRY | ||
| Heel stack | 28 mm | 39 mm |
| Forefoot stack | 21 mm | 31 mm |
| Drop | 7 mm | 8 mm |
| MATERIALS | ||
| Midsole | Full-length Lightstrike Pro (single slab) | PWRRUN PBX foam |
| Plate | Thin nylon stiffener (Torsion rods removed) | Redesigned nylon plate |
| VALUE | ||
| List price at launch | $140 | $175 |
Which line changes its ride more often?
The Adizero Adios has done it 2 times in 5 versions, most recently with the Adizero Adios 9 in 2025, and the Endorphin Speed has done it 3 times in 6 versions, most recently with the Endorphin Speed 6 in 2026. If you want a shoe you can rebuy without reading a review first, the Adizero Adios has the steadier record.
Buy the Adizero Adios 9
Sizes running outDiscontinued at retail. Amazon carries what remains, so treat an in-stock size as a closing window, and expect prices to swing.
Availability last checked Sep 10, 2026.
Buy the Endorphin Speed 6
Stock unverifiedAvailability last checked Jul 31, 2026.
Chasing a specific older version rather than choosing between the current two? The Adidas Adizero Adios lineage and the Saucony Endorphin Speed lineage track every version and what changed in each update.
Questions runners ask
- Is the Adidas Adizero Adios or the Saucony Endorphin Speed lighter?
- The Adizero Adios 9, by 1.6 oz in a men's US 9 (6.2 oz against 7.8 oz).
- Can I switch from the Adidas Adizero Adios to the Saucony Endorphin Speed?
- Yes, but ease into it. The drop moves 1 mm (7 mm on the Adizero Adios 9, 8 mm on the Endorphin Speed 6), which changes where your foot loads at landing. Give it two weeks of easy running before a hard session.
- Which is more cushioned, the Adidas Adizero Adios or the Saucony Endorphin Speed?
- The Endorphin Speed 6, on stack height: 39 mm under the heel against 28 mm. Stack is not the whole story, though; the foams differ too.
- Which comes in more widths?
- The Endorphin Speed 6. The Adizero Adios 9 runs in D for men's sizes; the Endorphin Speed 6 runs in D, 2E.
- Which costs more, the Adidas Adizero Adios or the Saucony Endorphin Speed?
- The Endorphin Speed 6, by $35 at list ($140 against $175). That gap narrows once either one gets a successor.
Updated September 10, 2026.