Head-to-Head
Fast-R Nitro Elite 3vsGlycerin Flex
The Fast-R Nitro Elite 3 is a race shoe while the Glycerin Flex is a daily trainer shoe. The Fast-R Nitro Elite 3 retails for $300 while the Glycerin Flex comes in at $170 — a $130 difference. The Fast-R Nitro Elite 3 is the lighter shoe at 6.0 oz versus 9.1 oz for the Glycerin Flex. In our ratings, the Fast-R Nitro Elite 3 edges out the Glycerin Flex — 8.8/10 versus 8.0/10.
| Rating | 8.8 / 10✓ | 8.0 / 10 | |
| Price | $300 | $170✓ | |
| Weight | 6.0 oz✓ | 9.1 oz | |
| Category | Race Shoe | Daily Trainer | |
| Terrain | Road | Road | |
| Cushion | Medium | Medium | |
| Softness | Balanced | Balanced | |
| Drop | Medium | Medium | |
| Drop (mm) | 8 mm | 6 mm | |
| Stack | 40 mm | 36 mm | |
| Stability | Neutral | Neutral | |
| Fit | Narrow | Narrow | |
| Energy Return | Very High✓ | Low | |
| Breathability | Medium | Medium | |
| Traction | High | High | |
| Shock Absorption | High | High | |
| Durability | Bad | Good✓ |
