Head-to-Head
Adizero Adios Pro 4vsGlycerin Flex
The Adizero Adios Pro 4 is a race shoe while the Glycerin Flex is a daily trainer shoe. The Adizero Adios Pro 4 retails for $250 while the Glycerin Flex comes in at $170 — a $80 difference. The Adizero Adios Pro 4 is the lighter shoe at 7.1 oz versus 9.1 oz for the Glycerin Flex. In our ratings, the Adizero Adios Pro 4 edges out the Glycerin Flex — 9.3/10 versus 8.0/10.
| Rating | 9.3 / 10✓ | 8.0 / 10 | |
| Price | $250 | $170✓ | |
| Weight | 7.1 oz✓ | 9.1 oz | |
| Category | Race Shoe | Daily Trainer | |
| Terrain | Road | Road | |
| Cushion | Medium | Medium | |
| Softness | Soft | Balanced | |
| Drop | Medium | Medium | |
| Drop (mm) | 6 mm | 6 mm | |
| Stack | 39 mm | 36 mm | |
| Stability | Neutral | Neutral | |
| Fit | Narrow | Narrow | |
| Energy Return | Very High✓ | Low | |
| Breathability | Warm | Medium✓ | |
| Traction | Medium | High✓ | |
| Shock Absorption | High | High | |
| Durability | Good | Good |
