Head-to-Head
Glycerin FlexvsGhost 18
The Glycerin Flex and Ghost 18 are both daily trainer shoes built for road running. The Glycerin Flex retails for $170 while the Ghost 18 comes in at $150 — a $20 difference. The Glycerin Flex is the lighter shoe at 9.1 oz versus 10.2 oz for the Ghost 18. In our ratings, the Glycerin Flex edges out the Ghost 18 — 8.0/10 versus 7.9/10.
| Rating | 8.0 / 10✓ | 7.9 / 10 | |
| Price | $170 | $150✓ | |
| Weight | 9.1 oz✓ | 10.2 oz | |
| Category | Daily Trainer | Daily Trainer | |
| Terrain | Road | Road | |
| Cushion | Medium | Medium | |
| Softness | Balanced | Firm | |
| Drop | Medium | High | |
| Drop (mm) | 6 mm | 10 mm | |
| Stack | 36 mm | 36 mm | |
| Stability | Neutral | Neutral | |
| Fit | Narrow | Narrow | |
| Energy Return | Low✓ | Low✓ | |
| Breathability | Medium | Medium | |
| Traction | High✓ | Medium | |
| Shock Absorption | High✓ | Medium | |
| Durability | Good | Very Good✓ |
