Brooks Adrenaline vs Glycerin

Last Updated on July 20, 2026

The Brooks Adrenaline and Brooks Glycerin sit side by side in the same lineup, but they solve very different problems. One is built to guide your foot. The other is built to cushion it. That distinction matters more than anything else, because it determines how your body feels after a full day of walking or a long run. Most people don’t realize this until they’ve already bought the wrong pair, and that can be frustrating.

Adrenaline vs Glycerin: What Actually Changes on Foot

The Adrenaline is a stability shoe. It’s designed to keep your stride aligned, especially if your foot rolls inward. Brooks does this with its GuideRails system, which acts like a subtle boundary that keeps your foot from drifting too far off track. The Glycerin is a neutral shoe. It doesn’t try to correct your movement. Instead, it focuses on absorbing impact and delivering a softer, smoother ride.

Related: What is a neutral running shoe and how does it compare to stability shoes?

Feel the Difference

The latest Glycerin models push this even further with nitrogen-infused cushioning that feels noticeably more plush and springy underfoot. When you walk in them back-to-back, the difference is immediate. The Adrenaline feels stable and grounded, while the Glycerin feels soft, almost pillowy, with more bounce.

Latest Models Compared: Glycerin 23 vs Adrenaline GTS 25

If you’re shopping today, this is the comparison that matters most. Brooks has refined both lines, but they’ve taken them in slightly different directions.

Both shoes received meaningful updates in their latest versions.

The Brooks Glycerin 23 continues to use DNA Tuned, a nitrogen-infused cushioning system with different cell structures in the heel and forefoot. Larger cells in the heel are designed to create softer landings, while smaller cells in the forefoot provide a firmer and more responsive toe-off. Brooks also added 2 mm of cushioning in the forefoot, giving the Glycerin 23 a slightly more substantial feel than the previous version.

The Brooks Adrenaline GTS 25 retains DNA LOFT v3 cushioning and the GuideRails support system, but Brooks added approximately 3 mm of cushioning in the forefoot and 1 mm in the heel. The additional foam creates a smoother and more forgiving ride while maintaining the structured support that defines the Adrenaline line.

The Adrenaline GTS 25 is not lighter on paper than the previous version. However, some reviewers have found that the updated cushioning makes it feel lighter, smoother, and less intrusive while running.

Which One Feels Better for Walking vs. Running?

Many people comparing these shoes are not primarily runners. They may be walking for exercise, working long shifts, travelling, or spending most of the day on their feet. That can change which shoe makes the most sense.

For walking, the Adrenaline GTS 25 is usually the better starting point if you prefer a supportive shoe or tend to experience excessive inward movement while walking. Its GuideRails system is designed to limit unwanted movement without forcing the foot into a rigid position.

The additional cushioning in the Adrenaline GTS 25 also makes it more comfortable than some traditional stability shoes. One reviewer found that its roomier toe box, responsive cushioning, and updated upper made long walks noticeably more comfortable than in the previous version.

The Glycerin 23 is the comfort-first option. It is better suited to walkers with a neutral gait who want generous cushioning for long walks, errands, travel, or everyday wear. Its broad platform provides some natural stability, but it does not contain the structured GuideRails support found in the Adrenaline.

For running, the distinction becomes clearer.

Neutral runners will generally prefer the Glycerin 23 for easy runs, recovery runs, and longer distances at a comfortable pace. Its cushioning is intended to soften landings while providing a reasonably responsive transition through the forefoot.

Runners who overpronate, feel unstable, or lose control of their form as they become tired may prefer the Adrenaline GTS 25. Its GuideRails system provides guidance along the sides of the foot, helping reduce excessive movement without feeling as aggressive as some older stability designs.

A Runner’s World reviewer found the Adrenaline GTS 25 gentler and less forceful than the GTS 24 while still providing noticeable support during longer runs.

Foot Conditions: Matching the Shoe to the Problem

Most buyers are not simply comparing two running shoes. They are often trying to address discomfort, instability, fatigue, or another ongoing concern.

The table below provides general starting points rather than medical recommendations.

A shoe cannot diagnose or treat the underlying cause of foot, knee, hip, or back pain. Comfort, fit, gait, injury history, activity level, and the amount of time you spend on your feet all matter.

If your discomfort appears to be connected to excessive inward movement or instability, the Adrenaline GTS 25 may be the better starting point.

If your gait is neutral and your main concern is impact, pressure, or underfoot comfort, the Glycerin 23 will usually be the more appropriate choice.

Persistent pain, swelling, numbness, or discomfort that changes how you walk should be assessed by a doctor, physiotherapist, or podiatrist.

Fit and Wide Feet

Both the Glycerin 23 and Adrenaline GTS 25 are available in multiple widths, making them suitable for a broader range of foot shapes than many premium running shoes.

However, having a wide foot does not automatically mean you should choose one model over the other. Your need for support remains the more important distinction.

The Glycerin 23 has a padded, accommodating upper and a broad platform. This creates a comfortable fit for neutral walkers and runners who need more room through the forefoot.

The Adrenaline GTS 25 has a more structured heel and midfoot hold, but its updated upper and roomier toe box make it less restrictive than the previous model. One tester specifically noted that the GTS 25 provided more toe room and used a stretchier, more breathable upper than the GTS 24.

Which Is Better for Wide Feet?

Neither model is automatically better for every wide foot.

If you have wide feet and benefit from additional stability, the Adrenaline GTS 25 in a wide or extra-wide fit will usually be the better functional choice. (see available wide widths for this shoe) It provides more space while preserving the guidance and secure fit that define the shoe.

If you have wide feet and a neutral gait, the Glycerin 23 will often feel more comfortable. Its broad base and accommodating upper provide room without adding a support system you may not need (see available wide widths for the Glycerin)

Do not increase the shoe’s length simply to gain more width. Choosing the proper wide version generally provides a better heel fit and places the flex point of the shoe in the correct position beneath your foot.

Latest Brooks Glycerin and Adrenaline Models

As of July 2026, the Brooks Glycerin 23 and Brooks Adrenaline GTS 25 are the newest standard models in these two lines.

The Glycerin 23 builds on the DNA Tuned cushioning introduced in the Glycerin 22. The main update is additional forefoot cushioning, along with refinements intended to make the transition from landing to toe-off feel smoother.

It remains a premium neutral shoe intended for everyday running, long walks, recovery runs, and extended periods on your feet.

The Adrenaline GTS 25 is the current version of Brooks’ long-running stability shoe. It replaces the Adrenaline GTS 24 and adds more cushioning beneath both the forefoot and heel.

Although the new version is slightly heavier than the Adrenaline GTS 24 (review), reviewers have reported that it can feel lighter and more efficient because of the updated cushioning.

The Adrenaline GTS 25 also has a redesigned upper, a roomier toe box, and a more flexible stability feel. These changes make it a more substantial update than a simple colour or upper revision.

The difference between the two models remains straightforward:

• The Glycerin 23 prioritizes premium cushioning and comfort for neutral feet.
• The Adrenaline GTS 25 combines cushioning with additional guidance for walkers and runners who prefer a more stable platform.

The older Glycerin 22 (check price) and Adrenaline GTS 24 (check price) can still be worthwhile when they are heavily discounted. However, the latest versions contain enough meaningful changes that buyers should compare the price difference before automatically choosing the older shoe.

How They Stack Up Against Competitors

The Brooks Adrenaline GTS 25 competes with stability shoes such as the ASICS GT-2000, ASICS Gel-Kayano, HOKA Arahi, and Saucony Guide.

The Adrenaline offers a relatively traditional running-shoe shape and a stability system that works along the sides of the foot rather than relying on a large, firm medial post beneath the arch.

The ASICS Gel-Kayano is generally the better comparison for people who want maximum cushioning with substantial support. The GT-2000 tends to feel lighter and more performance-focused. The HOKA Arahi provides a more pronounced rocker sensation, while the Saucony Guide uses a broad platform to create stability.

The Glycerin 23 competes with premium neutral shoes such as the ASICS Gel-Nimbus, New Balance Fresh Foam X 1080, HOKA Bondi, Saucony Triumph, and Nike Vomero.

The Glycerin occupies a useful middle ground. It provides generous cushioning without the tall, rolling sensation of some maximum-cushion shoes. Its broad platform also makes it feel more stable than some soft neutral models.

Choose the Glycerin over these competitors when you want premium cushioning but do not want an aggressive rocker or an excessively soft, unstable feel.

Check Current Prices on Amazon

Prices, widths, and colour availability can vary considerably between the newest and previous models. Older versions are often discounted, but uncommon sizes and popular colours may sometimes cost more.

Brooks Glycerin

Men’s Brooks Glycerin 23: This is the latest model as of summer 2026.

Men’s Brooks Glycerin 22 Previous model and possible discount option

Women’s Brooks Glycerin 23: This is the latest model as of summer 2026.

Women’s Brooks Glycerin 22: Previous model and possible discount option

Brooks Adrenaline GTS

Men’s Brooks Adrenaline GTS 25: This is the latest model as of summer 2026.

Men’s Brooks Adrenaline GTS 24: This is the previous model and possible discount option

Women’s Brooks Adrenaline GTS 25: This is the latest model for women as of summer 20206.

Women’s Brooks Adrenaline GTS 24: This is the previous model for women and is a discount option

Which One Should You Choose?

Choose the Brooks Adrenaline GTS 25 if you prefer a supportive shoe, tend to overpronate, or feel that your stride becomes unstable as you become tired.

It is also the better starting point if you regularly feel more comfortable in stability shoes or have previously used the Adrenaline successfully.

Choose the Brooks Glycerin 23 if you have a neutral gait and your priority is underfoot comfort. It is the better option for soft landings, easy running, long walks, travel, and spending extended periods on your feet.

The Glycerin is the softer and more comfort-focused shoe. The Adrenaline provides more guidance and structure.

Do not choose based on softness alone. The better shoe is the one that fits properly, feels comfortable while you move, and provides the appropriate amount of support for your gait.