The Adidas Boost RUN M and Altra Experience Flow 3 are both neutral road running shoes with moderate cushioning. The Boost RUN M costs about $80 less (from $65) and sits higher off the ground (37 mm vs 32 mm heel stack). The Experience Flow 3 is 0.5 oz lighter (9 oz vs 9.5 oz).
Bottom line: Pick the Boost RUN M if you want to spend less; pick the Experience Flow 3 if you want the lighter shoe.
Specs side by side
| Spec | Boost RUN M | Experience Flow 3 |
|---|---|---|
| Price | $65 | $145 |
| Rating | — | 4.4 / 5 (165 reviews) |
| Weight | 9.5 oz | 9 oz |
| Heel-to-toe drop | 9 mm | — |
| Heel stack height | 37 mm | 32 mm |
| Cushioning | Moderate | Moderate |
| Support | Neutral | Neutral |
| Surface | Road | Road |
| Available for | Men | Men & Women |
Specs and prices from Adidas and Altra, checked 2026-11-02. Weight is usually for a men's size 9–10.
Which should you get?
Get the Boost RUN M if…
- you want to spend less
- you want more foam under your heel
Get the Experience Flow 3 if…
- you want the lighter shoe
- you like feeling closer to the ground
More comparisons
- Adidas Boost RUN M vs New Balance Fresh Foam 680v9
- Adidas Boost RUN M vs On Cloudsurfer 2
- Adidas Boost RUN M vs Saucony Endorphin Pro 5 Speed-lace
- Altra Experience Flow 3 vs Altra Experience Flow 2
- Altra Experience Flow 3 vs ASICS GEL-CUMULUS 28
- Altra Experience Flow 3 vs On Cloudneo
- Altra Experience Flow 3 vs Adidas Supernova Ease
- Altra Experience Flow 3 vs ASICS NOVABLAST 6