The Adidas Adizero Adios 9 is a neutral road running shoe and the Nike Alphafly 4 is a road running shoe. The Adizero Adios 9 is 0.4 oz lighter (6.2 oz vs 6.6 oz) and costs about $182 less (from $98).
Specs side by side
| Spec | Adizero Adios 9 | Alphafly 4 |
|---|---|---|
| Price | $98–$140 | $280 |
| Rating | 4.7 / 5 (242 reviews) | — |
| Weight | 6.2 oz | 6.6 oz |
| Heel-to-toe drop | 7 mm | 8 mm |
| Heel stack height | 28 mm | — |
| Cushioning | Firm / responsive | — |
| Support | Neutral | — |
| Surface | Road | Road |
| Available for | Men & Women | Men & Women |
Specs and prices from Adidas and Nike, checked 2026-10-11. Weight is usually for a men's size 9–10.
Which should you get?
Get the Adizero Adios 9 if…
- you want the lighter shoe
- you want to spend less
Get the Alphafly 4 if…
- it fits you better or you like its colors
More comparisons
- Adidas Adizero Adios 9 vs Brooks Hyperion Elite 6
- Adidas Adizero Adios 9 vs Nike Vaporfly 4
- Adidas Adizero Adios 9 vs Brooks Hyperion Elite 5
- Adidas Adizero Adios 9 vs ASICS METASLEEK
- Nike Alphafly 4 vs Nike Alphafly 3
- Nike Alphafly 4 vs Brooks Hyperion Elite 5
- Nike Alphafly 4 vs Saucony Endorphin Elite 3 Space Cowboy
- Nike Alphafly 4 vs Saucony Daikanyama Endorphin Elite 3
- Nike Alphafly 4 vs Brooks Hyperion Elite 6