Head-to-Head
Adizero Boston 13vsAlphafly 3
The Adizero Boston 13 is a speed trainer shoe while the Alphafly 3 is a race shoe. The Adizero Boston 13 retails for $160 while the Alphafly 3 comes in at $285 — a $125 difference. The Alphafly 3 is the lighter shoe at 7.0 oz versus 9.0 oz for the Adizero Boston 13. In our ratings, the Adizero Boston 13 edges out the Alphafly 3 — 9.2/10 versus 8.9/10.
| Rating | 9.2 / 10✓ | 8.9 / 10 | |
| Price | $160✓ | $285 | |
| Weight | 9.0 oz | 7.0 oz✓ | |
| Category | Speed Trainer | Race Shoe | |
| Terrain | Road | Road | |
| Cushion | Medium | Medium | |
| Softness | Balanced | Soft | |
| Drop | Medium | Medium | |
| Drop (mm) | 6 mm | 8 mm | |
| Stack | 36 mm | 40 mm | |
| Stability | Neutral | Neutral | |
| Fit | Narrow | Medium | |
| Energy Return | Medium | High✓ | |
| Breathability | Medium | Breathable✓ | |
| Traction | Medium✓ | Low | |
| Shock Absorption | Medium | Medium | |
| Durability | Very Good✓ | Bad |
