Head-to-Head
Mach 7vsGlycerin Flex
The Mach 7 and Glycerin Flex are both daily trainer shoes built for road running. The Mach 7 retails for $145 while the Glycerin Flex comes in at $170 — a $25 difference. The Mach 7 is the lighter shoe at 8.3 oz versus 9.1 oz for the Glycerin Flex. In our ratings, the Mach 7 edges out the Glycerin Flex — 8.4/10 versus 8.0/10.
| Rating | 8.4 / 10✓ | 8.0 / 10 | |
| Price | $145✓ | $170 | |
| Weight | 8.3 oz✓ | 9.1 oz | |
| Category | Daily Trainer | Daily Trainer | |
| Terrain | Road | Road | |
| Cushion | Medium | Medium | |
| Softness | Firm | Balanced | |
| Drop | Medium | Medium | |
| Drop (mm) | 5 mm | 6 mm | |
| Stack | 37 mm | 36 mm | |
| Stability | Neutral | Neutral | |
| Fit | Narrow | Narrow | |
| Energy Return | Medium✓ | Low | |
| Breathability | Breathable✓ | Medium | |
| Traction | High | High | |
| Shock Absorption | High | High | |
| Durability | Good | Good |
