Head-to-Head
Structure 26vsEndorphin Speed 5
The Structure 26 is a daily trainer shoe while the Endorphin Speed 5 is a speed trainer shoe. The Structure 26 retails for $145 while the Endorphin Speed 5 comes in at $175 — a $30 difference. The Endorphin Speed 5 is the lighter shoe at 8.4 oz versus 10.5 oz for the Structure 26. In our ratings, the Structure 26 edges out the Endorphin Speed 5 — 8.9/10 versus 8.8/10.
| Rating | 8.9 / 10✓ | 8.8 / 10 | |
| Price | $145✓ | $175 | |
| Weight | 10.5 oz | 8.4 oz✓ | |
| Category | Daily Trainer | Speed Trainer | |
| Terrain | Road | Road | |
| Cushion | Medium | Medium | |
| Softness | Balanced | Balanced | |
| Drop | High | Medium | |
| Drop (mm) | 10 mm | 8 mm | |
| Stack | 38 mm | 36 mm | |
| Stability | Stability | Neutral | |
| Fit | Medium | Medium | |
| Energy Return | Low | High✓ | |
| Breathability | Medium | Breathable✓ | |
| Traction | Low | Medium✓ | |
| Shock Absorption | Medium | Medium | |
| Durability | Good | Good |
