Head-to-Head
Adizero Boston 13vsEndorphin Speed 5
The Adizero Boston 13 and Endorphin Speed 5 are both speed trainer shoes built for road running. The Adizero Boston 13 retails for $160 while the Endorphin Speed 5 comes in at $175 — a $15 difference. The Endorphin Speed 5 is the lighter shoe at 8.4 oz versus 9.0 oz for the Adizero Boston 13. In our ratings, the Adizero Boston 13 edges out the Endorphin Speed 5 — 9.0/10 versus 8.2/10.
| Rating | 9.0 / 10✓ | 8.2 / 10 | |
| Price | $160✓ | $175 | |
| Weight | 9.0 oz | 8.4 oz✓ | |
| Category | Speed Trainer | Speed Trainer | |
| Terrain | Road | Road | |
| Cushion | Medium | Medium | |
| Softness | Balanced | Balanced | |
| Drop | Medium | Medium | |
| Drop (mm) | 6 mm | 8 mm | |
| Stack | 36 mm | 36 mm | |
| Stability | Neutral | Neutral | |
| Fit | Narrow | Medium | |
| Energy Return | Medium | High✓ | |
| Breathability | Medium | Breathable✓ | |
| Traction | Medium | Medium | |
| Shock Absorption | Medium | Medium | |
| Durability | Very Good✓ | Good |
