Head-to-Head
Adizero Adios 9vsEndorphin Speed 5
The Adizero Adios 9 and Endorphin Speed 5 are both speed trainer shoes built for road running. The Adizero Adios 9 retails for $140 while the Endorphin Speed 5 comes in at $175 — a $35 difference. The Adizero Adios 9 is the lighter shoe at 6.2 oz versus 8.4 oz for the Endorphin Speed 5. In our ratings, the Adizero Adios 9 edges out the Endorphin Speed 5 — 9.4/10 versus 8.8/10.
| Rating | 9.4 / 10✓ | 8.8 / 10 | |
| Price | $140✓ | $175 | |
| Weight | 6.2 oz✓ | 8.4 oz | |
| Category | Speed Trainer | Speed Trainer | |
| Terrain | Road | Road | |
| Cushion | Low | Medium | |
| Softness | Soft | Balanced | |
| Drop | Medium | Medium | |
| Drop (mm) | 7 mm | 8 mm | |
| Stack | 28 mm | 36 mm | |
| Stability | Neutral | Neutral | |
| Fit | Narrow | Medium | |
| Energy Return | High✓ | High✓ | |
| Breathability | Warm | Breathable✓ | |
| Traction | Medium | Medium | |
| Shock Absorption | Medium | Medium | |
| Durability | Good | Good |
