Brooks Women’s Glycerin 21 Neutral Running Shoe - vs Brooks Women’s Trace 4 Neutral Running Shoe -
Updated August 2026 — Brooks Women’s Glycerin 21 Neutral Running Shoe - wins on cushioning and comfort, Brooks Women’s Trace 4 Neutral Running Shoe - wins on price and breathability.
The Brooks Glycerin 21 offers superior cushioning and comfort, while the Brooks Trace 4 is a more budget-friendly option with good performance. Choose based on your preference for plushness versus price.
Why Brooks Women’s Glycerin 21 Neutral Running Shoe - is better
Cushioning
Glycerin 21 features advanced nitrogen-infused DNA Loft v3 cushioning.
Comfort
Glycerin 21 provides a plush internal fit for supreme comfort.
Design
Glycerin 21 has a sleek and classic color scheme.
Why Brooks Women’s Trace 4 Neutral Running Shoe - is better
Price
Trace 4 is priced at $91.75, making it more affordable.
Breathability
Trace 4 features an engineered air mesh upper for enhanced breathability.
Versatility
Trace 4's RoadTack rubber outsole is suitable for various surfaces.
Overall score
Specifications
| Spec | Brooks Women’s Glycerin 21 Neutral Running Shoe - | Brooks Women’s Trace 4 Neutral Running Shoe - |
|---|---|---|
| Current Price | $114.95 | $91.75 |
| Cushion Type | DNA Loft v3 | DNA Loft v2 |
| Weight | Lightweight | Lightweight |
| Upper Material | Warp Knit | Air Mesh |
| Sales Rank | 29881 | 12197 |
Dimension comparison
Overview of the Brooks Glycerin 21 and Brooks Trace 4
When comparing the Brooks Glycerin 21 and the Brooks Trace 4, the Glycerin 21 is priced at $114.95, while the Trace 4 is about 17% cheaper at $91.75. Both shoes target runners seeking comfort and support, but they cater to slightly different preferences in terms of cushioning and overall performance.
The Brooks Glycerin 21 is designed for runners who prioritize plush cushioning and a soft fit. It features nitrogen-infused DNA Loft v3 cushioning, which aims to provide maximum comfort during runs. On the other hand, the Brooks Trace 4 focuses on a balanced mix of softness and breathability, using DNA Loft v2 cushioning to deliver a comfortable ride. Both models have their unique strengths, making them appealing to different types of runners.
Design and Aesthetics
In terms of design, the Brooks Glycerin 21 presents a sleek black, grey, and white color scheme, offering a classic and understated look. In contrast, the Brooks Trace 4 sports a brighter white, oyster, and rose combination that is visually striking and may appeal to those seeking a more vibrant shoe.
The Glycerin 21 boasts a plush internal fit with a newly engineered warp knit upper designed for breathability and flexibility, enhancing the overall comfort experience. The Trace 4, while also featuring an engineered air mesh upper, emphasizes breathability and a secure fit. The distinctive designs of both shoes cater to different style preferences while maintaining functional aspects necessary for running.
Cushioning and Comfort
The Brooks Glycerin 21 excels in cushioning, featuring the advanced nitrogen-infused DNA Loft v3 technology. This cushioning system is optimized to be lightweight, responsive, and durable, ensuring that runners experience supreme comfort over long distances. In comparison, the Trace 4 incorporates DNA Loft v2 cushioning, which also provides softness but may not offer the same level of plushness as its counterpart.
For runners who prioritize comfort above all, the Glycerin 21's super-softness and superior cushioning make it a strong choice. However, the Trace 4 still delivers excellent comfort, particularly for those who seek a balance of cushioning and a lighter feel on their feet. Ultimately, the choice will depend on personal preference for level of cushioning during runs.
Support and Stability
When it comes to support, the Brooks Glycerin 21 provides neutral support with a broad platform that stabilizes the foot. This design promotes smooth heel-to-toe transitions, which is vital for maintaining a comfortable and efficient running gait. The Trace 4 also offers stability through its segmented crash pad and sculpted grooves, ensuring a smooth transition from heel strike to toe-off.
Both shoes excel in providing stability, but the Glycerin 21 may be better suited for runners who require a bit more cushioning support during longer distances. The Trace 4, while supportive, is designed for those who may prefer a lighter shoe without sacrificing stability.
Breathability and Fit
Breathability is an important factor for runners, especially during warmer months. The Brooks Glycerin 21 features a newly engineered warp knit upper that allows for breathability while providing a soft fit against the foot. The internal stretch bootie enhances the overall comfort by adapting to the runner's stride.
On the other hand, the Brooks Trace 4's engineered air mesh upper is specifically designed to enhance breathability, keeping the feet dry and comfortable during runs. The secure fit provided by the Trace 4's upper is an advantage for runners who prioritize a snug feel. While both shoes offer good breathability, the choice may come down to personal preference for fit and how each upper material feels against the skin.
Performance on Different Surfaces
Both the Brooks Glycerin 21 and Trace 4 are designed primarily for road running, but their performance may vary based on individual preferences and running styles. The Glycerin 21's plush cushioning makes it ideal for runners seeking comfort on longer runs, especially on hard surfaces like asphalt.
In contrast, the Trace 4's versatile design, with its RoadTack rubber outsole, provides durability and rebound, making it suitable for various surfaces beyond just paved roads. This makes the Trace 4 a good option for runners looking to tackle different terrains while still enjoying the comfort of a neutral running shoe.
Price Comparison
The Brooks Glycerin 21 is priced at $114.95, while the Brooks Trace 4 is available for $91.75, making it a more budget-friendly option. The Glycerin 21's price reflects its advanced cushioning technology and design features, while the Trace 4 offers a solid performance at a lower price point.
Choosing between the two may depend on how much you are willing to invest in your running shoes. If you value maximum cushioning and comfort for longer runs, the Glycerin 21 justifies its higher price. However, for those looking for quality performance without breaking the bank, the Trace 4 presents a compelling alternative.
Which should you buy?
In conclusion, your choice between the Brooks Glycerin 21 and the Brooks Trace 4 will depend on your personal preferences and running needs. If supreme softness and a plush ride are your top priorities, the Glycerin 21 is worth the investment at $114.95. Conversely, if you’re seeking a reliable and comfortable running shoe at a more affordable price of $91.75, the Trace 4 is an excellent choice that doesn’t skimp on quality. Each shoe serves a distinct purpose, making it essential to consider your running style and preferences before making a decision.

