Brooks glycerin gts 21

Learn more about the Brooks glycerin gts 21 male running shoes, including key features, performance, reviews, model updates, and more.

Brooks glycerin gts 21

Price

$339

Rating

High

Popularity

Moderate

The Brooks Glycerin GTS 21 is a high-cushion stability running shoe that combines the plush feel of the Glycerin series with supportive features from the Brooks GuideRails system, positioned as a top choice for runners seeking comfort and support in the Brooks lineup alongside other models like the Adrenaline GTS.

Brooks
Brooks glycerin gts
6 colorways

Colorway: COCONUT/FORGED IRON/YELLOW

Widths available: normal

Summary

The Brooks Glycerin GTS 21 is a stability running shoe designed for runners who need extra support without sacrificing cushioning. It integrates GuideRails technology to control excessive movement and maintain a natural motion path, making it ideal for those with overpronation issues. Positioned within Brooks's lineup, it pairs the soft and plush cushioning of the Glycerin series with the stability features of the GTS models. This shoe provides a luxurious underfoot feel with optimal support, distinguishing itself from neutral models like the Ghost or the more minimalistic offerings such as the Launch.

Surface

road

Cushioning

MinLowMediumHighMax(31mm)

Category

ResponsiveBalancedComfort

Breathability

LowMediumHigh(air mesh upper)

Weight

286g

Heel-to-Toe Drop

10mm0mm14mm

Support

NeutralLightHigh

Width options

normal, wide

Grip

LowMediumHighMax

Suitability

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Pros & Cons

AI-powered

Fittir conducts a detailed analysis of the Brooks glycerin gts 21 to provide you with a comprehensive overview of the shoes features, pros, and cons based on 21 wear-tester reviews.

Most Mentioned Pros

Most Mentioned Cons

softness (4)
cushioning (3)
firmness (3)
stack height (2)
responsiveness (2)
midsole (2)
plushness (1)
comfort (1)
Pros
"The Glycerin 21 features a 2 mm extra stack height for a noticeably softer ride compared to previous models."
plush ride
stack height
cushioning increase
"The added stack height increases the cushioning effect of the shoe."
cushion
stack height
"The increased stack height provides additional cushioning."
stack height
cushioning
improvement
"The Glycerin 21 features supremely soft cushioning for a comfortable running experience."
cushioning
comfort
soft
"The cushioning is soft yet not overly squishy, offering good support without being too plush."
soft
supportive
cushioning
"The addition of two millimeters of DNA Loft v3 foam enhances the plush ride."
DNA Loft v3
extra foam
midsole
"The Glycerin 21 offers a luxurious, soft step-in feel with bounce back for responsiveness."
bounce back
luxury
comfort
"The cushioning is balanced with a spring effect for a smoother ride."
spring
smooth
comfort
"The Brooks Glycerin 21 offers enhanced cushioning with the new DNA Loft v3."
DNA Loft v3
extra cushioning
comfortable ride
"The Glycerin 21 features improved cushioning with an additional 2mm of nitrogen-infused DNA LOFT v3."
nitrogen-infused
plush
DNA LOFT
"The updated foam provides more cushioning while maintaining responsiveness."
DNA Loft
max cushioning
"The Brooks Glycerin GTS 21 provides great cushioning, ideal for long runs."
cushioning
support
"The shoe has a well-cushioned and comfortable ride."
cushioned
smooth ride
premium
"DNA Loft version 3 foam offers a cushy running experience."
DNA Loft
cushion
nitrogen infused
"The shoe features ample cushioning with the DNA Loft v3 for a comfortable ride."
DNA Loft v3
cushioning
softness
"The shoe offers excellent cushioning due to the nitrogen infused DNA Loft V3 midsole foam."
cushioning
DNA Loft V3
softness
"The midsole's nitrogen-infused DNA LOFT v3 material offers a light and airy ride that feels dynamic."
lightweight
dynamic
midsole
"The shoe is well-cushioned, which enhances the overall comfort during runs."
cushioning
overall comfort
"The cushioning breaks in well after initial firmness, providing a comfortable ride."
cushioning
comfort
nitrogen infused
"The nitrogen injected sole provides lightweight cushioning for a comfortable run."
nitrogen
cushioning
weight
"The shoe provides increased cushioning with the additional 2 mm stack height."
cushioning
stack height
DNA Loft version 3
"The DNA Loft version 3 foam enhances the ride quality compared to previous models."
energy return
ride quality
nitrogen infused
"The shoe maintains a firm ride, which is preferred by some runners looking for stability."
ride feel
stability
Cons
"Compared to other max-cushioned trainers, the ride is firmer and less soft than expected."
cushioned
max-cushioned
firm
"The shoe does not feel as squishy and soft compared to other models, which may not appeal to all runners."
cushioning
softness
feel
"The shoe's foam is not as soft as marketed, falling short of expectations."
cushion
foam
softness
"The shoe may be too soft for some runners."
cushioning
comfort
"The cushioning may feel overly soft for some runners, suggesting a lack of firmness."
softness
comfort
"The cushioning, while soft, remains relatively firm compared to other high cushion shoes, which may not suit all runners."
cushioning
firmness
"The shoe's cushioning feels somewhat firm when running despite being marketed as soft."
firm cushioning
running feel
softness
performance
"The cushioning of the Glycerin GTS 21 feels firmer than that of the Keano 30."
cushioning
firmness
"The substantial difference in foam softness in cold temperatures could affect overall performance in colder climates."
cold weather
performance
cushioning
"There is a noticeable lack of zip and bounce in the midsole."
soft
lack of energy return
"The shoe feels a bit firm despite being a max cushion model."
nitrogen infused
max cushion
responsiveness
"The shoe feels bland due to its cushioning setup."
non-responsive
uninspiring experience
"The stack height is lower compared to newer stability trainers."
low cushioning
comparative analysis
"The increased stack height might be unsuitable for some runners."
stack height
cushioning
"The cushioning doesn't feel as comfortable or responsive as previous versions, leading to disappointment."
cushioning
comparison
disappointment

overall (3)
breathability (3)
upper (2)
flexibility (2)
comfort features (1)
materials (1)
initial comfort (1)
support (1)
Pros
"The cushy heel collar and padded tongue contribute to the overall comfort of the shoe."
padded tongue
cushy heel
comfort
"The shoe is extremely comfortable for both running and casual wear."
casual wear
daily use
comfortable
"The combination of features offers a cohesive comfortable and supportive experience."
supportive
comfortable
cohesive
"The Brooks Glycerin GTS 21 is extremely comfortable with its soft midsole foam."
comfort
shoe
Glycerin GTS 21
"The materials used in the shoe are deluxe and provide a plush feel."
plush materials
well padded
"This shoe provides exceptional comfort right out of the box, requiring minimal break-in time."
minimal break-in
out of the box comfort
easy fit
"The shoe is praised for its comfort during runs, providing good support without slippage at the heel."
supportive
comfortable
no slippage
"The upper is noted for its comfort, providing a plush feel."
upper material
comfort
"The engineered warp knit upper enhances overall comfort and fit."
warp knit
comfort
fit
"The breathable mesh upper increases comfort and ventilation."
breathability
mesh materials
"The shoe has improved breathability compared to its predecessor, enhancing comfort during runs."
breathable
comfortable
improved
"The design of the upper enhances breathability."
upper design
breathable
plush
"The shoe offers a slight flexibility which can improve comfort for those who dislike stiff shoes."
flexibility
comfort
"The shoe offers flexibility from heel to toe for a smooth stride."
flexible
smooth stride
"The Brooks Glycerin 21 maintains excellent comfort for long-distance running."
comfort
cushioning
long-distance
"The engineered mesh upper is soft and comfortable right out of the box, adding to the overall comfort of the shoe."
mesh
comfort
breathability
"The neutral version offers a comfortable fit for runners needing less support."
comfort
neutral
everyday
"The shoes have a soft lining which enhances comfort around the heel and tongue."
soft lining
heel comfort
tongue comfort
"The shoe provides good lockdown, contributing to overall comfort during runs."
secure fit
comfort
Cons
"The new upper design makes the shoe feel overly warm during runs."
heat
padding
upper
comfort
"The dense upper material does not provide ample airflow, affecting breathability."
breathability
upper material
"The shoe has insufficient breathability in warmer conditions."
breathability
tongue padding
"While comfortable, the Glycerin 21 lacks a firmer feel that some runners prefer."
plush
comfort
"The shoe may not be suitable for overpronators, limiting its audience."
neutral
overpronation
audience
"The knit upper lacks sufficient ventilation, causing it to run warm."
breathability
heat
upper material
"The rearfoot may be overly stiff for some runners."
stiffness
rearfoot
"The heel counter is extremely stiff, which may cause discomfort for those with heel sensitivities."
stiffness
heel
comfort
"The sock liner is described as mediocre and does not meet the expectations for a shoe priced at $160."
sock liner
support
price
"The heel counter is stiff, which may not work for everyone and could be uncomfortable over time."
heel comfort
stiffness
padding durability
"The shoe feels a little firm initially, which can be uncomfortable for a new pair."
initial feel
firmness
comfort
"Despite being a comfortable shoe, the overall ride quality is not as good as expected, affecting long run comfort."
ride quality
comfort
performance

outsole (3)
long-lasting (2)
construction quality (1)
material (1)
weight (1)
longevity (1)
resilience (1)
coverage (1)
Pros
"The construction of the Glycerin 21 is durable and can withstand extensive use without significant wear."
durability
long-lasting
quality build
"The DNA Loft v3 foam is lighter and provides better durability than traditional EVA foams."
DNA Loft v3
lightweight
durability
"The Glycerin 21 remains lightweight despite its added cushioning and support."
lightweight
support
foam
"The shoe is surprisingly lightweight despite its larger appearance."
lightweight
performance
"The shoe is lightweight, making it ideal for long periods of use."
weight
lightweight
long usage
"The shoe maintains durability with quality midsole technology that lasts over time."
durability
midsole technology
long mileage
"The durability of the shoe is expected to be above average, lasting longer than many competitors."
durable
above average
miles
"The shoe provides a soft yet firm feel, promoting longevity and stability."
firm
long-lasting
high cushion
"The outsole is highly durable, ensuring longevity in the shoe."
outsole
durability
"The RoadTack outsole promises good durability for long-lasting performance."
durability
RoadTack
performance
"The outsole is designed for durability and lightweight performance."
outsole
dual formed
lightweight
Cons
"The outsole has less coverage compared to the previous model which may impact durability."
outsole
coverage
durability
"There are concerns about the foam breaking down quicker compared to other models, which may affect longevity."
durability
wear
"The outsole coverage under the toe is decreased, raising concerns about durability."
outsole
durability
premature wear
"There is concern over the longevity of the shoe due to the thin carbon-rubber outsole that shows wear fast."
outsole
wear
"The dual formed rubber outsole might wear out quicker under intense usage."
durability
outsole
heel strike
"The flex groove under the toe may be a warning for premature wear patterns for some runners."
flex groove
premature wear
durability
"The weight of the shoe might be a concern for competitive runners."
weight
durability

responsiveness (4)
speed (4)
transition (1)
energy retention (1)
lightweight (1)
versatility (1)
target audience (1)
injury prevention (1)
Pros
"The shoe offers a smooth transition between strides."
smoothness
efficiency
"The shoe transitions well thanks to a well-rounded heel and decent bevel."
heel transition
bevel
performance
"The shoe provides a super smooth transition during runs."
smooth
transition
running experience
"The design improvements in the outsole allow for better heel-to-toe transition."
outsole
performance
transition
"The midsole technology provides good energy retention and a smoother transition."
smoother transition
responsive
energy efficiency
"The Glycerin 21 has a lightweight feel which aids in comfort and responsiveness during runs."
responsive
comfortable
fast turnover
"The Glycerin 21 serves as a versatile shoe suitable for various types of runs."
everyday
long runs
responsive
"The shoe is designed to be responsive thanks to its supercritical foam."
foam
performance
"The shoe provides a firm yet responsive ride."
response
performance
"The shoe's characteristics make it an excellent choice for average-to-heavy-weight runners."
average-weight
heavy-weight
performance
"The shoe reduces stress through improved stride mechanics, which can prevent injuries."
smooth stride
stress reduction
"These shoes are versatile for a variety of workout types."
versatile
workouts
endurance
Cons
"The Glycerin 21 lacks the energy and liveliness that some runners seek in a max-cushioned trainer."
ride
liveliness
max-cushioned
"Some reviewers find the Glycerin 21 too soft for their preference and lack responsiveness."
softness
responsiveness
"The shoe's design may not appeal to those looking for a more responsive training option."
softness
preference
"Although the ride is stable, it lacks responsiveness and quickness."
slow
stability
"The Glycerin GTS 21 lacks the responsiveness of previous models and other brands."
responsiveness
comparison
disappointment
"The shoe's plush cushioning may hinder faster running performance for some."
cushioning
slow
"The shoe does not perform well at faster paces."
pace
speed performance
versatility
"The shoe may not perform well during speed-focused runs."
performance
speed
"The shoe is not suitable for faster runs as it lacks speed."
speed
performance
running
"The shoe's turnover is slow, which may hinder speed during runs."
speed
run dynamics
"The Glycerin 21 GTS lacks excitement in its ride."
lack of bounce
uninspiring
daily trainer
"The shoe feels heavier and less responsive compared to earlier models, which may affect performance negatively."
heaviness
weight
performance
"The Glycerin GTS 21 offers less flexibility in the forefoot compared to the Keano 30."
flexibility
forefoot
"The Glycerin GTS 21 takes longer to transition due to its stiffness."
transition
stiffness

width (4)
toe box (2)
breathability (1)
fit consistency (1)
toebox (1)
space (1)
size (1)
adaptability (1)
Pros
"The shoe includes a wider toe box which enhances overall comfort during runs."
wider fit
comfort
spacious
"The new warp knit upper allows for a more voluminous fit in the toe box, enhancing comfort."
warp knit upper
roomy fit
natural splay
"The new warp-knit upper provides breathability and structure for a snug fit."
warp-knit
breathable
secure fit
"The upper material is noted for being breathable and adding to the overall comfort."
breathable
comfortable
material
"The upper features engineered warp mesh for optimal support and breathability."
upper
mesh
support
"Reviewers appreciated the consistent fit across different foot shapes."
fit
foot shape
comfort
"There is a notable improvement in the spaciousness and comfort of the toebox compared to previous models."
spacious
comfortable
accommodating
"The shoe features a roomy toebox which enhances fit and comfort."
toebox
fit
"The fit of the shoe is conducive to various foot shapes due to its slightly wider design."
wide
toe box
fit
"The shoe fits wider than previous versions, allowing for better toe movement."
wide fit
toe space
"The Brooks Glycerin 21 is said to fit well and even feels wider, enhancing comfort during runs."
comfort
fit assessment
wider option
"Brooks offers width options for better fit and comfort for different foot shapes."
fit options
inclusivity
"The shoe fits true to size, providing a secure and comfortable fit."
true to size
fit
comfort
"The upper part of the shoe adapts well to the foot, securing it comfortably."
secure
adaptive
fit
"The updated upper design provides a better fit for a variety of foot shapes."
upper design
fit variety
"The shoe fits well lengthwise and is generally accommodating in width."
fit
accommodating
"It has a highly breathable and flexible upper that maintains comfort."
breathability
flexibility
fit
"The shoe provides a secure heel fit due to added stitching around the heel."
customized
stitching
secure
"The padded tongue and stretchy laces contribute to a locked-in feel."
tongue
laces
comfort
"There is ample room in the toe box, allowing for good toe splay."
fit
toe box
comfort
"The mesh material adds flexibility and accommodates different foot shapes with width options."
mesh
fit
width options
Cons
"The toe-box feels somewhat confining, leading to potential discomfort during runs."
comfort
size
"The shoe lacks a gusseted tongue which can affect lockdown."
gusseted
tongue
lockdown
"The tongue tends to lean laterally over time when walking, although it's not an issue during running."
design
walking
"The shoe could be lighter, indicating it is on the heavier side."
weight
heaviness
comfort
"Runners with normal width feet may experience foot sliding unless the laces are secured tightly."
fit
lace
sliding
"The shoe may require a lace lock to prevent slipping, indicating potential fit issues."
fit
lace
sliding
"The drop in design may not suit everyone's preferences."
motion issues
personal preference
"For those with narrow feet, the shoe may not provide the desired fit."
fit
narrow foot
"The most recent model feels narrower than previous versions."
narrow
previous version
size adjustment
"The shoe might not cater to runners with wider feet due to the engineered warp mesh."
fit
warp mesh
"The width options may still not accommodate all foot types."
fit
narrow
width
"There's a concern about the breathability of the upper since the tongue is not gusted."
tongue design
locking mechanism
upper material
"The shoe may feel short due to a slight taper at the toe box."
toe box
fit length
short feel
"The Glycerin GTS 21 has a narrower toe box compared to the Keano 30."
toe box
narrow
"The heel slippage issue may pose a problem for runners with narrower feet."
heel fit
slippage
narrow fit
"Despite claims, no significant difference in the medial width was felt."
no improvement
medial width
comparison
"The upper material may lack structure for some users."
fit
flexibility
"The 10 mm heel-to-toe drop might not suit runners who prefer lower drops."
heel-to-toe drop
personal preference
fit
"The laces are round and not the preferred style for secure lockdown, which could affect fit during runs."
laces
fit
preference
"The Glycerin GTS 21 has a less secure midfoot fit compared to the Keano 30."
midfoot
security

support (2)
transitions (1)
ride (1)
platform stability (1)
flexibility (1)
Guiderails (1)
heel support (1)
heel transition (1)
Pros
"Smooth and stable transitions make the shoe effective for slow-paced running."
stability
smooth transitions
suitable for slow runs
"The shoe provides excellent support for neutral runners without excessive bounce."
support
neutral runners
cushion
"The shoe offers moderate stability without excessive weight."
stability
lightweight
"It provides a stable rearfoot and midfoot for better support during runs."
stable
supportive
rearfoot
midfoot
"The shoe has a stable base, enhancing safety and performance for runners who need that support."
stability
supportive
performance
"Brooks' guide rail system provides excellent midfoot support and stability."
guide rail system
midfoot support
"The incorporation of the guide rail system offers additional support."
support
guide rails
"The Glycerin GTS 21 features stability technologies that help maintain proper body mechanics."
stability
guide rails
support
"The guide rails offer excellent support for over-pronators."
guide rails
over-pronation
"The shoe has a very stable ride, making it suitable for easy and slow runs."
stability
easy runs
slow pace
"With a broader platform and increased stack height, the shoe enhances stability during runs."
wider platform
increased stack height
stable running
"This shoe allows for great flexibility, enhancing the overall running experience."
flexible
responsive
comfortable
"Guiderails provide excellent stability support throughout the run."
stability
support
Guiderails
"The heel counter's high quality provides added stability and support during running."
heel support
stability
quality
"The new beveled heel provides a smoother transition when landing on the rear foot."
beveled heel
smooth transition
"The updated design allows for more stability without compromising comfort."
stability
design
"The GTS version includes a guide rail system for support."
guide rails
support
alignment
"The guide rails help keep the ankle, knee, and hip aligned for better movement."
alignment
support
movement
"The shoe maintains a strong lock down in the midfoot area, which enhances stability during runs."
stability
lock down
fit
"The guide rails provide effective stability without harshness, allowing for a smooth run."
stability
support
safety
"The GTS 21 version includes supportive features for stability during runs."
stability
supportive rails
guiding
Cons
"The shoe does not transition well for runners seeking a smooth ride due to the lack of a prominent forefoot rocker."
rocker
forefoot
transition
"Despite its stability claims, some runners may find that it does not provide the additional stability needed during runs."
stability
side rails
performance
"Some runners might prefer more flexibility in the forefoot than what this shoe offers."
flexibility
forefoot
stability
"The heel stability is lacking when walking, making it less comfortable for that activity."
stability
walking comfort
"The shoe feels less stable due to its semi-curved design, impacting overall stability."
instability
design
"The stability features may be insufficient for runners highly sensitive to arch support."
arch support
stability features
comparative performance
"The heel-to-toe drop of 10 mm may feel awkward for some runners."
heel-to-toe drop
10 mm
running feel
"The shoe's structure may not cater to runners with specific pronation needs."
pronation issues
guide rails
neutral runners
"Some runners might find the stability features excessive."
stability
injury prevention
"The guide rail system may feel too rigid for some users."
guide rail
stability
"The heel and midfoot of the Glycerin GTS 21 feel notably stiff."
heel
midfoot
stiffness

traction (2)
performance (1)
outsole (1)
outsole_material (1)
Pros
"The RoadTack outsole adds grip and durability for varying surfaces and weather conditions."
outsole
durability
grip
"The RoadTack rubber outsole provides excellent grip in wet and slippery conditions."
grip
wet conditions
durability
"The shoe adapts well for use in wet conditions, maintaining good traction."
wet conditions
road traction
"The shoe's outsole provides excellent traction on various surfaces including frosty and icy conditions."
outsole performance
traction
weather conditions
"The large amount of rubber coverage on the outsole offers good grip on various surfaces."
grip
durability
road
Cons

weight (3)
design (2)
lightweight (1)
flexibility (1)
aesthetics (1)
sustainability (1)
quality (1)
heaviness (1)
Pros
"The shoe is lighter than its predecessor, contributing to a more manageable overall weight for runners."
lightweight
decreased weight
performance
"It is fairly lightweight considering the level of cushioning it offers."
lightweight
cushioned training
"The outsole features flex grooves that enhance adaptability to various surface impacts."
flex grooves
impact adaptation
outsole design
"The shoe's design is visually appealing with an attractive look and variety of color options available."
attractive
variety
colorways
"The Brooks Glycerin 21 features improved aesthetics with better design and colorways."
aesthetics
colorways
design improvement
"The Brooks Glycerin 21 has a visually appealing color scheme."
visual
color
"The Glycerin GTS 21 is partially made of recycled materials, making it an eco-friendly option."
eco-friendly
recycled materials
sustainability
Cons
"The laces used in the Glycerin 21 feel cheap and have a tendency to fray easily."
laces
durability
quality
"The shoe is fairly heavy compared to other options in its category."
weight
lightweight
"The increased stack height results in a higher overall weight for the shoe."
weight
stack height
material
"The shoe may feel too heavy compared to its previous iteration."
weight
heaviness
"The shoe's weight may feel excessive for some runners."
heavy
performance preference
"The Glycerin GTS 21 lacks reflective elements, which could hinder visibility in low-light conditions."
safety
reflective details
"The price point of the shoe is noted as high, especially considering some of its shortcomings."
price
value
"There's concern about the breathability of the upper material as temperatures rise, which could lead to discomfort."
breathability
temperature
concern

Model Updates

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Reviews

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Reviews on Fittir (-)

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Wear-tester reviews (21)

4.4/5

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