Head-to-Head
Alphafly 3vsEndorphin Speed 5
The Alphafly 3 is a race shoe while the Endorphin Speed 5 is a speed trainer shoe. The Alphafly 3 retails for $285 while the Endorphin Speed 5 comes in at $175 — a $110 difference. The Alphafly 3 is the lighter shoe at 7.0 oz versus 8.4 oz for the Endorphin Speed 5. In our ratings, the Alphafly 3 edges out the Endorphin Speed 5 — 8.9/10 versus 8.8/10.
| Rating | 8.9 / 10✓ | 8.8 / 10 | |
| Price | $285 | $175✓ | |
| Weight | 7.0 oz✓ | 8.4 oz | |
| Category | Race Shoe | Speed Trainer | |
| Terrain | Road | Road | |
| Cushion | Medium | Medium | |
| Softness | Soft | Balanced | |
| Drop | Medium | Medium | |
| Drop (mm) | 8 mm | 8 mm | |
| Stack | 40 mm | 36 mm | |
| Stability | Neutral | Neutral | |
| Fit | Medium | Medium | |
| Energy Return | High✓ | High✓ | |
| Breathability | Breathable | Breathable | |
| Traction | Low | Medium✓ | |
| Shock Absorption | Medium | Medium | |
| Durability | Bad | Good✓ |
