Head-to-Head
Adizero Adios 9vsVaporfly 4
The Adizero Adios 9 is a speed trainer shoe while the Vaporfly 4 is a race shoe. The Adizero Adios 9 retails for $140 while the Vaporfly 4 comes in at $260 — a $120 difference. The Vaporfly 4 is the lighter shoe at 5.9 oz versus 6.2 oz for the Adizero Adios 9. In our ratings, the Adizero Adios 9 edges out the Vaporfly 4 — 9.4/10 versus 8.9/10.
| Rating | 9.4 / 10✓ | 8.9 / 10 | |
| Price | $140✓ | $260 | |
| Weight | 6.2 oz | 5.9 oz✓ | |
| Category | Speed Trainer | Race Shoe | |
| Terrain | Road | Road | |
| Cushion | Low | Medium | |
| Softness | Soft | Soft | |
| Drop | Medium | Medium | |
| Drop (mm) | 7 mm | 6 mm | |
| Stack | 28 mm | 35 mm | |
| Stability | Neutral | Neutral | |
| Fit | Narrow | Narrow | |
| Energy Return | High✓ | High✓ | |
| Breathability | Warm | Medium✓ | |
| Traction | Medium | Medium | |
| Shock Absorption | Medium | Medium | |
| Durability | Good✓ | Bad |
