Adidas Adizero Boston 11 vs Adizero Boston 13
Two versions apart. Updated September 10, 2026. Specs are men's US 9.
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THE SHORT ANSWER
Two updates and 3 years separate the Adidas Adizero Boston 11 from the Adizero Boston 13. Net change: 0.6 oz lighter, 3.5 mm less heel stack, a drop change from 8.5 mm to 6 mm, a new midsole. The Adizero Boston 12 is where the character changed, and that is the update Adizero Boston 11 owners notice first.
- Adidas Adizero Boston 11Sizes running outMen's at AmazonWomen's
- Adidas Adizero Boston 13Men's at AmazonWomen's
Availability last checked Aug 11, 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 11 to Adizero Boston 122023Changed character
- Step 2Adizero Boston 12 to Adizero Boston 132025Refined, same shoe
Adizero Boston 11 vs Adizero Boston 13: 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 11 | Adizero Boston 13 |
|---|---|---|
| FIT AND WEIGHT | ||
| Weight | 9.6 oz | 9 oz |
| Widths | D | D |
| Upper | Thin nylon mesh with a stiff, lightly padded heel counter | Engineered mesh with a padded tongue and Achilles collar |
| CUSHIONING GEOMETRY | ||
| Heel stack | 39.5 mm | 36 mm |
| Forefoot stack | 31 mm | 30 mm |
| Drop | 8.5 mm | 6 mm |
| MATERIALS | ||
| Midsole | Lightstrike Pro over firmer Lightstrike EVA | Lightstrike Pro (13.8% more than the 12) over Lightstrike 2.0 EVA |
| Plate | Glass-fiber EnergyRods | EnergyRods 2.0 |
| VALUE | ||
| List price at launch | $160 | $160 |
Or buy the Adizero Boston 12 instead?
The Adizero Boston 12 is worth a look only if you want the ride it introduced, because that is the update that changed the shoe. Buying it to soften the jump does not work: you would be adapting to the same change either way, just at an older spec.
Buy the Adizero Boston 12
Stocked at AmazonMen's stock is gone.
Women's: Check price at AmazonAvailability last checked Sep 10, 2026.
Questions runners ask
- Can I go straight from the Adidas Adizero Boston 11 to the Adizero Boston 13 and skip the Adizero Boston 12?
- Yes, but going Adizero Boston 11 to Adizero Boston 13 means taking one change in a single step: the Adizero Boston 12 is where the ride moved. The drop also goes 8.5 mm to 6 mm across the jump, so give it a week of easy running.
- How much did the weight change across these two updates?
- 0.6 oz off in total, 9.6 oz to 9 oz in a men's US 9. The Adizero Boston 12 took it to 9.2 oz first.
- Is the Adizero Boston 12 the better buy than either of these?
- On paper it splits them: 9.2 oz against 9.6 oz for the Adizero Boston 11 and 9 oz for the Adizero Boston 13, on a 37 mm heel and a $160 list price. Whether that is worth chasing depends on what the Adizero Boston 12 update actually did, which the section above works through.
- Did the Adizero Boston get taller between the Adizero Boston 11 and the Adizero Boston 13?
- Heel stack went 39.5 mm to 36 mm, by way of 37 mm on the Adizero Boston 12. Drop moved 8.5 mm to 6 mm, which is the change your calves and Achilles notice.
- Where does the Adizero Boston 13 sit in the Adizero Boston lineup now?
- It is the current model, two versions on from the Adizero Boston 11 and the newest one you can buy at full retail.