Brooks Glycerin Max review

The Brooks Glycerin Max is a maximalist running shoe that will excel for:

• Brooks fans who’ve turned to other brands for a true max-cushion shoe. It's finally here.
• Runners seeking a plush, comfort-driven daily trainer that emphasises support over speed.
• Marathoners who value max protection on easy and recovery runs to help preserve their legs.
• Anyone who loves Brooks' step-in feel and wants a running shoe that doubles as a sneaker.

One of the main issues with the Glycerin Max is its weight—it definitely could be lighter. This isn’t a problem for easy or slow-paced runs but could be a drawback for runners seeking a shoe that can handle faster speeds. There are better options at this price, like the ASICS Superblast 2 or Mizuno Neo Vista.

We also feel that the Glycerin Max's performance doesn’t justify its high price. The DNA Tuned midsole delivers similar energy return to the Hoka Mach 6 and ASICS Novablast 4, yet it comes at a considerably higher cost—making it a tough choice for those after the best value.

Additionally, the limited rubber coverage on the outsole raised durability concerns here in the lab. For those prioritising a sturdy, maximalist shoe with a better, more durable outsole, the Puma MagMax Nitro is a superior model.

Brooks advertised a 47-mm stack height for the Glycerin Max, but our measurement came in at 42.3 mm. Still, it surpasses the 40 mm threshold that unofficially defines the "maximalist" category—an outcome we find really appealing for the heaviest runners out there.

Notably, this makes it the first Brooks shoe to cross that threshold, with the Ghost Max 2 capping off at 39.0 mm.

In our view, while the heel cushioning is impressive, the forefoot is where this shoe truly stands out from a daily trainer. We believe that if you enjoyed the Glycerin 21 but wanted a boost in cushioning, this feels like the most natural upgrade—with an additional 5.1 mm in the heel and 9.1 mm more under the forefoot!

This yellow section contains the most responsive part of DNA Tuned, engineered with smaller cells to create a lively, bouncy feel directly underfoot.

You probably guessed it—the Glycerin series, traditionally a high-drop design, now uses a more balanced drop, which is the same modification that Brooks did with the Ghost. We measured a 6.6 mm difference between the heel and forefoot, only deviating 0.6 mm from Brooks' stated 6 mm.

This moderate drop suits midfoot strikers perfectly, yet with such plush cushioning and a pronounced curved heel, we believe it’s versatile enough to work for all footstrikes.

First, we tested the yellow section of DNA Tuned, which supports the forefoot, midfoot, and half of the heel.

Our durometer registered a 19.9 HA score, aligning with our running experience—the shoe feels really plush and compliant thanks to its towering stack height but stops short of the ultra-soft feel seen in models like the New Balance Fresh Foam X More v5.

Some maximalist shoes rely on a Pebax or carbon plate for stability, but Brooks took a different approach. From a comfort perspective, we appreciate this choice—being plateless enhances the cushioned, plush feel, especially at slower paces. We awarded it a 4/5 for torsional rigidity.

To assess the Glycerin Max's performance in extreme cold, we tested it by placing the shoe in a freezer for 20 minutes next to our pistachio ice creams before re-evaluating it. Following the freeze, we observed a 17% change—quite impressive for an EVA-based midsole.

After checking the midsole with our callipers, we turned our focus to the insole. We found a recycled EVA footbed, measuring 6.0 mm thick, adding a soft, eco-friendly layer of cushioning directly underfoot as the first point of contact.

A standout feature of the Glycerin Max is its innovative foam, DNA Tuned, which introduces a world-first manufacturing process: a dual midsole merging two densities seamlessly into a single slab of foam.

Is this groundbreaking and will change the industry like PEBA? No, but it’s a nice advancement. Less glue translates to a more eco-friendly manufacturing process and fewer potential breaking points. While we’ve seen glued dual-foam setups, like in the On Cloudmonster Hyper, this marks the first time it's done glue-free in a running shoe.

Naturally, we put DNA Tuned under our microscope! In the left image, the yellow foam (firmer) displays a denser cell network with thicker walls, offering a more reactive feel for faster toe-offs. On the right side, the white foam shows an airier, more uniform cell structure, creating a cushier feel under the heel.

These variations in cell thickness and arrangement highlight how the foam delivers a balanced blend of support and cushioning across different zones of the Glycerin Max.

Brands understand that a running shoe with over 40 mm of stack height requires a pronounced toe rocker, and the Glycerin Max delivers on this front. We discovered that it rises up to an impressive 6 cm, easing transitions despite the midsole’s thick construction.

There's also a subtle heel bevel, though not as aggressive as in other maximalist designs like the Hoka Cielo X1. From our perspective, this shoe feels tailored to easy or slow paces, with Brooks carefully positioning it to avoid cannibalising the sales of their Hyperion Max 2 performance trainer.

One of the best aspects of maximalist running shoes is their generous build, which often translates to a more accommodating upper. In our experience, the Glycerin Max follows suit, offering an upper that’s fairly standard in width at 98.0 mm at the widest part but feels surprisingly roomy.

This roomy feel comes from the high volume of the upper and a slightly broader midfoot area. The extra space here contributes to a more relaxed, comfort-driven fit, making it ideal for recovery runs.

We recorded a second measurement in the big toe area, which came in at 79.1 mm.

As we said before, the fit is a bit roomier than the numbers suggest, thanks to the high-volume design and the comfort-focused, plush engineered mesh.

With an enormous, towering stack height, it’s natural to wonder—is this shoe stable at all?

Surprisingly, it is! In our experience, this reflects a growing trend in maximalist shoes and supertrainers, where brands incorporate subtle stability features like sidewalls or sole flares. This approach often makes these shoes even more stable than average daily trainers, which seems...crazy!

Some maximalist shoes rely on a Pebax or carbon plate for stability, but Brooks took a different approach. From a comfort perspective, we appreciate this choice—being plateless enhances the cushioned, plush feel, especially at slower paces. We awarded it a 4/5 for torsional rigidity.

We found the heel counter to be ultra-comfortable, with thick padding providing plush support around the area, and it surprised us with its flexibility—scoring a 3/5. In our experience, it’s not as firm as most maximalist shoes, which often rely on stiff counters for added stability.

The forefoot measures slightly wider than a regular Glycerin at 118.8 mm, and we think going any broader would have been overkill.

This width is enough for neutral forefoot and midfoot strikers, especially given the shoe’s already substantial weight.

We were delighted to find reflective elements incorporated into the Glycerin Max—an excellent addition, especially considering Brooks has left this feature out of other recent top-tier trainers like the Ghost Max 2.

One of the main challenges with maximalist running shoes is the increased longitudinal stiffness from all that foam underfoot. This stiffness can make them less ideal for easy runs or just casual use as a sneaker.

In our 90-degree bend test, the Glycerin Max scored 32.9N, a decent outcome. While it’s not ultra-flexible, this is surprisingly good for a shoe with over 40 mm in the heel. We think this level of flexibility, combined with the absence of a stabilising plate, makes it suitable for everyday wear in many cases.

In our view, the Glycerin Max’s weight is one of its weakest aspects. While we concede that it boasts generous cushioning underfoot and a plush, ultra-padded upper, we think 10.8 oz feels slightly excessive for a premium-priced shoe.

This weight, however, isn’t a deal-breaker for daily training runs, especially if comfort is your priority. But for speed work or fast-paced work, we found that the shoe’s bulk becomes noticeable. It feels heavy, it looks heavy, and on our scale, it absolutely is.

Brooks took its time entering the maximalist running shoe market, but its debut in the maximalist category comes with an outstanding upper on the first try.

The engineered mesh offers a blissful blend of comfort and ventilation. Made from three layers, we initially worried it might trap heat, but our tests with the smoke machine confirmed superb ventilation in the toebox area. 

Using a LED flashlight, we found that airflow is primarily concentrated in the toebox, while side areas are reinforced to handle lateral forces—a smart choice given the towering stack height.

The toebox’s large ventilation holes are crafted with impressive precision. Examining them up close with a microscope, we saw the meticulous design that ensures maximum breathability.

The engineered mesh is also notably stretchy, enhancing both comfort and spaciousness.

In our experience, the luxurious padding in the tongue and heel, though perhaps a bit excessive, combines with the airy mesh to make this one of the best uppers we’ve seen in the game.

A premium upper should excel in both ventilation and durability, so we put the Glycerin Max to the test with our Dremel.

After testing, we found a solid 3/5 durability rating, which we believe is impressive for such a comfort-focused upper. This result is possible due to the triple-layer construction we observed earlier.

The heel area impressed us with tonnes of padding, not bad for a feature that often raises durability concerns here in the lab.

However, in our tests, we found that Brooks excelled here by incorporating a protective lining that reinforces the heel. This smart design achieved a strong 4 out of 5 durability rating—a truly solid score in our view.

To understand Brooks’ choice of a softer rubber (69.0 HC) in the outsole, we need to consider its unique design.

The outsole has a significant amount of exposed foam and relatively limited rubber coverage, making a grippy compound essential due to the reduced ground contact points. In simpler terms—less rubber touching the ground demands higher traction from what’s there.

Why did Brooks opt for this minimalist approach? From our perspective, it’s all about weight savings. The shoe already carries substantial heft, so full-contact outsole wasn’t an option. 

When it comes to outsole durability, the Glycerin Max definitely raised eyebrows in the lab. As we showed before, there's minimal rubber covering the midsole, and that could be an issue.

After testing with the Dremel, we found a 1.2 mm dent, which, to be honest, left us a bit uneasy. In most shoes, we’d say, “Oh, it’s fine!” but with so little rubber touching the ground here, we hoped for a bit more resilience.

Fortunately, we measured a 3.1 mm thickness, which helps offset the limited rubber coverage and should provide adequate durability. However, don’t expect this outsole to last forever—it leans more toward the opposite!

Maximalist training shoes are hovering around the £200 range, and that’s exactly where the Glycerin Max lands. We know it’s a substantial investment for a trainer, but you’re getting a serious amount of foam underfoot. And given recent market trends, if maximal cushioning is what you’re after, it’s going to come with a maximal price tag.

But we think that Brooks could enhance some Glycerin Max’s features to match its cost, like its weight. Still, for marathoners seeking a recovery or long-run shoe that saves the legs for the next session, it’s a solid choice.

We were delighted to find reflective elements incorporated into the Glycerin Max—an excellent addition, especially considering Brooks has left this feature out of other recent top-tier trainers like the Ghost Max 2.

While the 14.0 mm single-slab foam cushioning provides outstanding comfort, we found the tongue to be a major letdown. Despite its pillow-like thickness and loop, it still shifts around noticeably, which it's again unacceptable in a £200 shoe.

We believe that a simpler 8 or 9 mm tongue would’ve delivered sufficient comfort without the extra bulk. This would have allowed space for a gusset, effectively securing it to the midsole and delivering a much better fit.

Our first disappointment with the tongue emerged right off the bat—it isn’t fixed to the sides! In our view, this oversight falls far below expectations for a shoe positioned as Brooks' premium trainer.

Brooks makes some unconventional choices, and one of the quirkiest is their tendency to skip finger-loop heel tabs in training shoes, only adding them to competition models like the Hyperion Elite 4. 

However, the Glycerin Max features an extended, easy-grab heel collar that makes slipping your foot inside a breeze.

The insole is removable, as it’s not glued to the last. However, it’s not a typical design—it features a flared heel for a sink-in feel, which may slightly reduce stability if you choose to replace it.