Head-to-Head
Adizero Adios 9vsStreakfly 2
The Adizero Adios 9 is a speed trainer shoe while the Streakfly 2 is a race shoe. The Adizero Adios 9 retails for $140 while the Streakfly 2 comes in at $180 — a $40 difference. The Streakfly 2 is the lighter shoe at 5.1 oz versus 6.2 oz for the Adizero Adios 9. In our ratings, the Adizero Adios 9 edges out the Streakfly 2 — 9.4/10 versus 8.9/10.
| Rating | 9.4 / 10✓ | 8.9 / 10 | |
| Price | $140✓ | $180 | |
| Weight | 6.2 oz | 5.1 oz✓ | |
| Category | Speed Trainer | Race Shoe | |
| Terrain | Road | Road | |
| Cushion | Low | Low | |
| Softness | Soft | Soft | |
| Drop | Medium | Low | |
| Drop (mm) | 7 mm | 4 mm | |
| Stack | 28 mm | 27 mm | |
| Stability | Neutral | Neutral | |
| Fit | Narrow | Narrow | |
| Energy Return | High | Very High✓ | |
| Breathability | Warm | Breathable✓ | |
| Traction | Medium | Medium | |
| Shock Absorption | Medium✓ | Low | |
| Durability | Good✓ | Bad |
