Adidas Adizero Boston 10 vs Adizero Boston 12
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 Adidas Adizero Boston 10 from the Adizero Boston 12. Net change: 1.2 oz lighter, 2 mm less heel stack, a drop change from 8 mm to 6.5 mm, a new midsole, $20 more at list. The Adizero Boston 12 is where the character changed, and that is the update Adizero Boston 10 owners notice first.
- Adidas Adizero Boston 10Sizes running outMen's at AmazonWomen's
- Adidas Adizero Boston 12Women's
Availability last checked Sep 10, 2026. Prices and stock change without notice.
The two updates in between
Each step has its own page with the full change list and the verdict on that update.
- Step 1Adizero Boston 10 to Adizero Boston 112022Faithful successor
- Step 2Adizero Boston 11 to Adizero Boston 122023Changed character
Adizero Boston 10 vs Adizero Boston 12: 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 | Adizero Boston 10 | Adizero Boston 12 |
|---|---|---|
| FIT AND WEIGHT | ||
| Weight | 10.4 oz | 9.2 oz |
| Widths | D, 2E | D |
| Upper | Soft mono mesh with suede overlays | Engineered mesh with a thin tongue |
| CUSHIONING GEOMETRY | ||
| Heel stack | 39 mm | 37 mm |
| Forefoot stack | 31 mm | 30.5 mm |
| Drop | 8 mm | 6.5 mm |
| MATERIALS | ||
| Midsole | Lightstrike Pro over firmer Lightstrike EVA | Lightstrike Pro over softer Lightstrike 2.0 EVA |
| Plate | Glass-fiber EnergyRods | EnergyRods 2.0 |
| VALUE | ||
| List price at launch | $140 | $160 |
Or buy the Adizero Boston 11 instead?
The Adizero Boston 11 is the value play if you find it discounted. It carries most of what the Adizero Boston 12 added while selling as an older model, and moving one version at a time is the smaller adjustment.
Buy the Adizero Boston 11
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 Aug 11, 2026.
Questions runners ask
- Can I go straight from the Adidas Adizero Boston 10 to the Adizero Boston 12 and skip the Adizero Boston 11?
- Yes, but going Adizero Boston 10 to Adizero Boston 12 means taking one change in a single step: the Adizero Boston 12 is where the ride moved. The drop also goes 8 mm to 6.5 mm across the jump, so give it a week of easy running.
- How much did the weight change across these two updates?
- 1.2 oz off in total, 10.4 oz to 9.2 oz in a men's US 9. The Adizero Boston 11 took it to 9.6 oz first.
- Is the Adizero Boston 11 the better buy than either of these?
- On paper it splits them: 9.6 oz against 10.4 oz for the Adizero Boston 10 and 9.2 oz for the Adizero Boston 12, on a 39.5 mm heel and a $160 list price. Whether that is worth chasing depends on what the Adizero Boston 11 update actually did, which the section above works through.
- Did the Adizero Boston get taller between the Adizero Boston 10 and the Adizero Boston 12?
- Heel stack went 39 mm to 37 mm, by way of 39.5 mm on the Adizero Boston 11. Drop moved 8 mm to 6.5 mm, which is the change your calves and Achilles notice.
- Where does the Adizero Boston 12 sit in the Adizero Boston lineup now?
- Two versions on from the Adizero Boston 10, and already replaced itself: the Adizero Boston 13 arrived in 2025. If you are shopping old stock anyway, price the Adizero Boston 12 against it before deciding.