Head-to-Head
Adrenaline GTS 25vsGlycerin Flex
The Adrenaline GTS 25 and Glycerin Flex are both daily trainer shoes built for road running. The Adrenaline GTS 25 retails for $155 while the Glycerin Flex comes in at $170 — a $15 difference. The Glycerin Flex is the lighter shoe at 9.1 oz versus 10.6 oz for the Adrenaline GTS 25. In our ratings, the Adrenaline GTS 25 edges out the Glycerin Flex — 8.2/10 versus 8.0/10.
| Rating | 8.2 / 10✓ | 8.0 / 10 | |
| Price | $155✓ | $170 | |
| Weight | 10.6 oz | 9.1 oz✓ | |
| Category | Daily Trainer | Daily Trainer | |
| Terrain | Road | Road | |
| Cushion | Medium | Medium | |
| Softness | Balanced | Balanced | |
| Drop | High | Medium | |
| Drop (mm) | 10 mm | 6 mm | |
| Stack | 37 mm | 36 mm | |
| Stability | Stability | Neutral | |
| Fit | Medium | Narrow | |
| Energy Return | Low✓ | Low✓ | |
| Breathability | Warm | Medium✓ | |
| Traction | Medium | High✓ | |
| Shock Absorption | Medium | High✓ | |
| Durability | Very Good✓ | Good |
