Hi, I’m James, a foot and ankle specialist, and I’ve tested every Brooks shoe out there! If you’re looking for a reliable daily trainer with plush cushioning, the Brooks Glycerin 21 is a fantastic option. It’s one of Brooks’s most popular neutral shoes, and the updates to this model make it softer and more comfortable than ever.
In this review, I’ll walk you through the cushioning, stability features, and best uses of the Glycerin 21, and we’ll also compare it to other Brooks favourites like the Brooks Glycerin Max and the Brooks Ghost 16.
Cushioning: DNA Loft V3 for Maximum Comfort
One of the standout features of the Glycerin 21 is its DNA Loft V3 nitrogen-infused cushioning. This is a big upgrade from the Glycerin 20, offering a plusher, softer feel underfoot. If you found the previous model a bit too firm, you’ll love how the Glycerin 21 lets you sink in comfortably with every step.
- Stack and Drop:
- 38 mm in the heel
- 28 mm in the forefoot
- 10 mm drop
The 10 mm drop is pretty standard for Brooks, giving your foot a slight forward tilt. This helps reduce pressure on the Achilles tendon but can place a bit more pressure on the forefoot. The 28 mm of forefoot cushioning helps absorb impact, but if you need even more cushioning, consider the Brooks Glycerin Max or the Brooks Ghost Max 2.
Stability: Neutral Shoe with Subtle Support
Although the Glycerin 21 is classified as a neutral shoe, it still offers a few stability features that help keep your foot steady:
- Sidewalls: Located on the midfoot (both inside and outside), these sidewalls help control pronation and keep your foot centered during your gait cycle.
- Heel Counter: The moderately stiff heel counter helps cradle your heel and prevent side-to-side movement. This added support makes the Glycerin 21 feel stable, even during long runs or extended periods of standing.
If you’re looking for more stability, especially for overpronation, check out the Brooks Adrenaline GTS 24, which offers Brooks’s Go-To Support system.
Fit and Upper: Plush Comfort with Room for Toes
The upper on the Glycerin 21 features an updated woven mesh that provides a sock-like feel. It’s plush and breathable, making it perfect for long-distance comfort. Here’s what you can expect:
- Toe Box: Slightly wider than previous models, giving your toes plenty of room to splay. This is great if you need extra space up front.
- Midfoot and Heel: Moderate width with a secure, snug fit.
- Tongue and Heel Padding: The padded tongue (non-gusseted) and plush heel counter offer excellent lockdown and comfort.
If you prefer an even wider toe box with a snug midfoot, you might want to check out the Topo Atmos, known for its anatomical fit.
Performance: Daily Running and Long-Distance Comfort
The Brooks Glycerin 21 is a workhorse of a shoe designed for:
- Long runs
- Recovery runs
- Easy, high-mileage runs
- Daily walking and standing
It’s not built for speed, so if you’re looking for something to handle uptempo or fartlek work, you might prefer a shoe like the Brooks Hyperion. The Glycerin 21 shines when it comes to comfort and durability – perfect for those who want a reliable, cushioned shoe for logging lots of miles.
How Does It Compare to Other Brooks Shoes?
- Brooks Glycerin Max: Offers even more cushioning with a 45 mm stack height and a more aggressive forefoot rocker. Ideal if you want a max-cushion shoe with great energy return.
- Brooks Ghost 16: A lighter neutral shoe with a 12 mm drop and a firmer feel. Great for those who prefer a bit more responsiveness.
- Brooks Ghost Max 2: Similar max-cushion comfort but with more width options and a slightly heavier build.
Final Thoughts: Is the Glycerin 21 Right for You?
If you’re looking for a plush, neutral shoe that can handle long runs, recovery runs, or daily walking, the Brooks Glycerin 21 is a top-notch choice. It offers comfort, stability, and a secure fit, making it a reliable workhorse for your everyday activities.
Do you have questions about Glycerin 21? Drop them in the comments below! If you found this helpful, like, share, and subscribe – it helps support the channel. Thanks for reading. We have a lot more Brooks reviews if you are interested. Happy running!
