Daily trainer · Stability · Road · 10.5 oz · 10mm drop · 38/28mm stack
Discontinued — we no longer see this shoe in stock. The Brooks Glycerin GTS 24 replaced it
How it ranks
The Brooks Glycerin GTS 21 sits about average for daily trainers in our data. Durability and cushioning are its strongest sub-ratings. The rating rests on 7 runner reviews and 5 other rated shoes in the Glycerin GTS product line. Another 5 reviews would set the confidence on this shoe's own reviews.
Confidence
How settled the rating is against every other rated shoe. A shoe can rate high on confidence with relatively few reviews of its own when its product line has a long record and external ratings from retailer sites agree. Confidence will score low when we have few ratings or when runners disagree.
Confidence
62/100
“Great option for people battling shin splints and stress fractures”
“Arch support is incredible in comparison to others I have owned”
“Essentially no pain in this shoe”
“Stability rails to prevent overpronation”
50% 3/6
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Prices updated daily. Last checked Sep 14.
Rating & Confidence vs. other shoes for sale
Each dot is one rated shoe for sale, placed by its rating and by how much evidence sits behind it. Shoes toward the top right are both well rated and well established.
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Better Shoes Rating
Each dot is one version of the Glycerin GTS, placed by its rating and release year. The gold dot is this shoe.
Release year
2025 · 0 reviews
74 Decent
8 Confidence
2026 · 5 reviews
70 Decent
34 Confidence
2025 · 1 review
82 Good
40 Confidence
Glycerin GTS 21 This shoe
2023 · 7 reviews
73 Decent
62 Confidence
2022 · 11 reviews
77 Decent
72 Confidence
2021 · 3 reviews
73 Decent
34 Confidence
Sizing and ride details at a glance.
1/5
Overall
Sorry but it didn't work out for me.
Anonymous runner · Dec 10, 2024
12 mpw training for a half marathon came from the HOKA Bondi 8
5/5
Overall
Have struggled with shin pain in the past—essentially no pain in this shoe. Of course there are probably conflating factors, but I can at least say this shoe doesn't contribute to shin pain. I think a combination of the stability rails to prevent overpronation and, counterintuitively, a stiffer (but decently padded) undersole to disincentivize overstriding and excessive tibialis breaking forces makes this a great option for people who are battling shin splints and stress fractures.
mitrunner · Oct 23, 2024
50 mpw training for 5K and 10K came from the HOKA Clifton 9
5/5
Overall
Great shoe. Very comfortable. arch support is incredible in comparison to others I have owned
Anonymous runner · Jun 25, 2024
20 mpw training for 5K and 10K came from the Brooks Adrenaline GTS 20
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