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Brooks Women's Addiction GTS 15 Supportive Running vs Brooks Women’s Glycerin 21 Neutral Running Shoe -

Updated August 2026 — Brooks Women's Addiction GTS 15 Supportive Running wins on support and fit, Brooks Women’s Glycerin 21 Neutral Running Shoe - wins on price and cushioning.

The Brooks Women's Addiction GTS 15 offers superior support, while the Glycerin 21 excels in cushioning. Choose based on your running needs.

Why Brooks Women's Addiction GTS 15 Supportive Running is better

Support

Addiction GTS 15 provides maximum support with GuideRails technology.

Fit

Addiction GTS 15 has a generous fit for orthotics and high-volume feet.

Stability

Addiction GTS 15 is designed for stability, ideal for injury-prone runners.

Why Brooks Women’s Glycerin 21 Neutral Running Shoe - is better

Cushioning

Glycerin 21 features nitrogen-infused DNA Loft v3 cushioning.

Weight

Glycerin 21 is lightweight and versatile for various activities.

Price

Glycerin 21 is more affordable at $114.95.

Overall score

Brooks Women's Addiction GTS 15 Supportive Running
85
Brooks Women’s Glycerin 21 Neutral Running Shoe -
78

Specifications

SpecBrooks Women's Addiction GTS 15 Supportive RunningBrooks Women’s Glycerin 21 Neutral Running Shoe -
Price$139.95$114.95
Sales Rank2166129881
Cushion TypeBioMoGo DNADNA Loft v3
Support TypeMaximumNeutral
APMA SealYesYes

Dimension comparison

Brooks Women's Addiction GTS 15 Supportive RunningBrooks Women’s Glycerin 21 Neutral Running Shoe -

Overview of the Brooks Women's Addiction GTS 15 and Glycerin 21

In the realm of running shoes, both the Brooks Women's Addiction GTS 15 and the Glycerin 21 have their own unique strengths. The Addiction GTS 15, priced at $139.95, is designed for runners who need support and protection, while the Glycerin 21, more affordable at $114.95, aims to deliver a plush, cushioned experience. Both shoes have been granted the APMA Seal of Acceptance, ensuring they meet high standards for foot health.

Support and Stability

The Brooks Women's Addiction GTS 15 excels in providing maximum support, making it a top choice for runners who require stability. With its innovative GuideRails support technology, this shoe effectively reduces excess joint movement, particularly benefiting the knees, which are prone to injury. In contrast, the Glycerin 21 offers neutral support, designed for those who prefer a softer feel while running. Its broad platform stabilizes the foot, promoting smooth transitions, but it does not provide the same level of structural support as the Addiction GTS 15.

Cushioning and Comfort

When it comes to cushioning, the Glycerin 21 is the clear winner. It features nitrogen-infused DNA Loft v3 cushioning, which provides an exceptional level of softness and comfort, perfect for long runs or cross-training. The Brooks Women's Addiction GTS 15 also offers comfort with its BioMoGo DNA cushioning, adapting to the runner's stride and weight, but it is primarily focused on support rather than plushness. For those seeking the ultimate in cushioning, the Glycerin 21, with its super-soft feel, may be more appealing.

Fit and Design

The Brooks Women's Addiction GTS 15 is specifically designed for runners needing extra room, accommodating orthotics or high-volume feet with its generous fit. It features a roomy toe box, which is beneficial for those with unique foot shapes. In contrast, the Glycerin 21 offers a plush internal fit with an improved stretch bootie that surrounds the foot comfortably. While both models prioritize comfort, the Addiction GTS 15 stands out for those needing a more specialized fit.

Weight and Versatility

The Glycerin 21 is designed to be lightweight and versatile, making it suitable for various activities, from road running to gym workouts. Although specific weight comparisons are not available, the focus on lightweight materials suggests that the Glycerin 21 is built for speed and agility. The Addiction GTS 15, while supportive, is primarily tailored for dedicated runners who require a shoe that emphasizes stability over versatility.

Aesthetic Appeal

Both shoes boast stylish designs, but they cater to different preferences. The Addiction GTS 15 comes in an Oyster/Peacoat/Lilac Rose color scheme, appealing to those who favor a more vibrant look. Meanwhile, the Glycerin 21 in Black/Grey/White offers a classic, understated aesthetic that can easily match any running outfit. Depending on personal style, one may find one model more visually appealing than the other.

Pricing and Value

The Brooks Women's Addiction GTS 15 is priced at $139.95, while the Glycerin 21 is priced at $114.95, making the latter about 17% cheaper. This price difference can be a significant factor for budget-conscious shoppers. However, the value of each shoe may vary based on individual needs—runners prioritizing support might find the higher price of the Addiction GTS 15 justified, while those seeking cushioning may prefer the more economical Glycerin 21.

Which should you buy?

Choosing between the Brooks Women's Addiction GTS 15 and Glycerin 21 ultimately depends on your specific running needs. If you require maximum support and a roomy fit, the Addiction GTS 15 is the way to go. However, if you're looking for superior cushioning and a versatile, lightweight shoe, the Glycerin 21 is a fantastic option. Consider your running style, foot shape, and personal preferences to make the best choice for your next pair of running shoes.