The Adidas Adizero Boston 12 and Adidas Duramo Speed 2 are both neutral road running shoes with firm, responsive cushioning. The Adizero Boston 12 is 0.6 oz lighter (9.2 oz vs 9.8 oz) and sits higher off the ground (38 mm vs 35 mm heel stack). The Duramo Speed 2 costs about $35 less (from $45).
Specs side by side
| Spec | Adizero Boston 12 | Duramo Speed 2 |
|---|---|---|
| Price | $80 | $45 |
| Rating | 4.6 / 5 (2,569 reviews) | 4.6 / 5 (617 reviews) |
| Weight | 9.2 oz | 9.8 oz |
| Heel-to-toe drop | 7 mm | 7 mm |
| Heel stack height | 38 mm | 35 mm |
| Cushioning | Firm / responsive | Firm / responsive |
| Support | Neutral | Neutral |
| Surface | Road | Road |
| Available for | Men & Women | Men |
Specs and prices from Adidas, checked 2026-10-11. Weight is usually for a men's size 9–10.
Which should you get?
Get the Adizero Boston 12 if…
- you want the lighter shoe
- you want more foam under your heel
- you want the more widely reviewed shoe
Get the Duramo Speed 2 if…
- you want to spend less
- you like feeling closer to the ground
More comparisons
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- Adidas Duramo Speed 2 vs On Cloudflow 5
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- Adidas Duramo Speed 2 vs Brooks Cascadia Elite