Brooks Glycerin 23 vs Adrenaline GTS 25
Glycerin 23 or Adrenaline GTS 25? Here’s how they compare on feel, fit, brand specs and price, from the fitting team at The Run House.
The short answer
Want plush, pillowy comfort? Get the Glycerin 23.
Want dependable support every day? Get the Adrenaline GTS 25.
Get the Glycerin 23 if
- You don’t need stability and prefer a neutral ride
- You want the softer, more cushioned ride
- You want a dedicated recovery-day shoe
- You prefer a lower drop (8mm vs 10mm)
Get the Adrenaline GTS 25 if
- Your feet roll inward or you like extra support
- You like a firmer, more stable feel
- You like a higher heel-to-toe drop (10mm vs 8mm)
- You need a narrow width
On the run
Glycerin 23: The plush luxury cruiser. Deep, plush cushioning with a soft heel. It’s built for comfort, not speed, and the forefoot needs a couple dozen miles to loosen up.
Adrenaline GTS 25: The steady everyday stability shoe. Balanced, smooth and predictable, and a little softer than the GTS 24. The GuideRails keep your knees tracking straight, and you notice them most when your legs are tired.
Specs side by side
| Glycerin 23 | Adrenaline GTS 25 | |
|---|---|---|
| Price | $174.95 | $124.95 |
| Stack height (heel / forefoot) | 38 / 30mm* | 37 / 27mm* |
| Drop | 8mm | 10mm |
| Weight, men’s | 10.6 oz | 10.6 oz |
| Weight, women’s | 9.5 oz | 9.5 oz |
| Support | Neutral | Stability |
| Plate | None | None |
| Widths | Standard, Wide, Extra wide | Narrow, Standard, Wide, Extra wide |
| Built for | Easy days, Recovery runs, Long runs, Walking & all-day wear | Easy days, Long runs, Walking & all-day wear |
| Expected life | 400–500 miles | 450–550 miles |
Stack, drop and weight come from each brand’s own website. Numbers marked * aren’t published by the brand and come from other published specs. Weights are for the size each brand quotes. Expected life is our estimate.
Fit
Glycerin 23. Runs slightly short, so if you’re between sizes, go up a half. Roomy forefoot with more toe height than the 22; the stretchy upper can feel loose on narrow feet. Wide available.
Adrenaline GTS 25. True to size with room for your toes and a secure heel. Narrow through extra-wide.
Try them on
Come try on both at The Run House in Walpole, Needham or Falmouth. Gait analysis is always free.
Shop the Glycerin 23 · Shop the Adrenaline GTS 25 · Compare other running shoes