Brooks Glycerin 23 Review

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This review draws on Brooks' published details, TrainingPlan's audited catalog, and SoleReview's independent analysis. It does not represent first-person testing by TrainingPlan.

Quick Verdict

The Brooks Glycerin 23 is the comfort-focused neutral trainer in Brooks' current road lineup. Its 39/31mm catalog stack, 8mm drop, and dual-cell DNA TUNED midsole give it a clear role across daily runs, long outings, and recovery mileage. Brooks emphasizes plush landings and stronger toe-offs; SoleReview independently describes the ride as plush and smooth, with an efficient transition through the firmer forefoot.

This is not a lightweight speed shoe. The men's catalog weight is 10.6oz, and the premium upper favors comfort over minimal construction. The Glycerin 23 makes the most sense for runners who can use its cushioning across several easy-to-steady run types. Its broad width range is a practical strength, while a warm upper and less structured lateral side are the clearest cautions.

Key Specifications

The table follows the standardized catalog. Brooks lists the same men's weight and 8mm drop. SoleReview measured 38/30mm and a 9.5oz women's sample, small differences that can result from size and measurement method. Those independent figures do not replace the catalog contract.

What Changed

Brooks says the Glycerin 23 adds 2mm of nitrogen-infused DNA TUNED cushioning in the forefoot and introduces a streamlined engineered-knit upper. The platform remains dual cell: Brooks uses different cell structures to pursue softer landings and firmer, more responsive toe-offs. A wide base and tuned heel-to-forefoot construction are intended to smooth the transition.

SoleReview notes that DNA TUNED debuted in the Glycerin 22 and describes version 23 as a related setup rather than a completely new concept. The meaningful revision is the thicker forefoot, where the firmer internal foam is most prominent. Relative to the older Glycerin 21, the current shoe also moves from a 10mm to an 8mm specified drop and uses a different midsole architecture.

Ride and Intended Use

Brooks markets the Glycerin 23 for road running, everyday runs, and long runs. SoleReview's independent assessment supports the broad comfort role: it reports a softer rearfoot, firmer forefoot, and smooth transition for both heel and forefoot landings. The outlet also praises outsole grip.

TrainingPlan's recovery category is a use-case label, not a promise about physical outcomes. Editorially, the Glycerin 23 is best suited to easy runs, steady aerobic work, and long mileage where cushioning matters more than low weight. The standard rocker and 8mm geometry provide a relatively familiar transition instead of forcing the foot through a sharply curved platform.

Runners comparing comfort-first options can use the best cushioned running shoes and best long-run shoes guides for broader context.

Fit and Sizing

SoleReview reports true-to-size length and an accommodating upper. Its men's reference includes standard, wide, and extra-wide sizing, while the complete TrainingPlan catalog records narrow, standard, wide, and extra-wide options across the men's and women's line.

The engineered knit and padding are designed for comfort, but the independent review says the layered upper runs warm. Runners in hot conditions or those who prefer a thin, highly ventilated race-style upper should weigh that tradeoff. Width availability helps with horizontal volume, but selecting a wider shoe is not a substitute for confirming heel and midfoot hold.

What Works Well

• Plush, differentiated cushioning: The softer rear and firmer forefoot give the shoe a comfort-led ride without using one uniform foam feel.
• Useful training range: Catalog roles cover daily, long, and recovery runs, allowing one pair to handle several low-to-steady intensity days.
• Broad fit coverage: Four cataloged width categories expand the audience beyond a single standard last.
• Conventional transition: An 8mm drop and standard rocker may suit runners who do not want an aggressively rolling max-cushion platform.

Tradeoffs

• Weight: At 10.6oz for the catalog men's value, the Glycerin 23 is not positioned as a light performance trainer.
• Warm upper: SoleReview specifically flags heat retention despite the upper's comfortable fit.
• Lateral structure: The independent analysis finds the perforated outer side softer and less supportive laterally; this remains a neutral shoe, not the GuideRails-equipped GTS version.
• Premium price: The MSRP: $175 MSRP demands that a runner value its multi-run comfort role.

Who Should Consider This Shoe

• Neutral runners seeking plush daily and long-run cushioning.
• Runners who want one comfort-first shoe for routine and recovery mileage.
• Athletes who prefer an 8mm drop and standard rocker.
• Buyers who need more than one width option.

Who Should Look Elsewhere

• Runners prioritizing low weight or frequent interval sessions.
• Athletes who prefer a thin, highly breathable upper.
• Runners specifically seeking a mechanical guidance system rather than neutral support.

Cross-Brand Comparison

The ASICS Gel-Nimbus 28 is another premium cushioned daily-and-long-run shoe, with a lower 5mm catalog drop and more men's stack. The Nike Vomero 18 also targets cushioned road mileage but uses a 10mm drop. The Glycerin's middle ground is an 8mm offset, dual-cell construction, and especially broad catalog width coverage.

The best recovery running shoes roundup provides more options when easy-day comfort is the main goal.

Same-Brand Comparison

The Brooks Ghost 18 is MSRP: $25 less at catalog MSRP and is limited to the daily-trainer category. It uses DNA LOFT v3, carries less stack, and has a higher 10mm drop. The Glycerin 23 justifies its position through dual-cell cushioning and added long-run and recovery roles.

The existing Brooks Ghost versus Brooks Glycerin comparison explores that lineup decision. Runners satisfied with the older Glycerin 21's 10mm geometry should not assume the lower-drop version will feel identical.

Value

At MSRP: $175, the Glycerin 23 sits firmly in premium-trainer territory. The price is most defensible when its daily, long-run, and recovery roles replace multiple comfort shoes in a rotation. Its width selection also adds value for runners who struggle to find premium cushioning outside standard sizing.

The case is weaker for anyone mainly seeking speed or a lightweight feel. The catalog MSRP—not a scraped retailer price—is the appropriate basis for that comparison.

Final Verdict

The Brooks Glycerin 23 strengthens a familiar comfort formula by adding forefoot foam and retaining the dual-cell DNA TUNED design. Brooks' claims and SoleReview's observations align on plush landings, smoother transitions, and an accommodating fit. Independent evidence also supplies useful limits: the upper can run warm, the lateral side is less structured, and the shoe is not light.

Choose it for neutral daily, long, and recovery mileage when cushioning and fit options matter most. Look elsewhere when the priority is speed, ventilation, or guided support.

Disclosure: As an Amazon Associate, we earn from qualifying purchases. This helps support TrainingPlan at no extra cost to you.