Weight
278 g
All models average 268.9 gDifference from average +9.1 g
Average of 973 models
Brooks / Glycerin
Glycerin 21
Glycerin 21 is a neutral max-cushion shoe for daily road miles, long runs and walking. It adds 2mm more nitrogen-infused DNA LOFT v3 than the Glycerin 20 while keeping a 10mm offset. A broad platform supports smooth, stable transitions, and a new warp-knit upper balances breathability with a flexible, secure fit. It is the first Glycerin to use lightweight RoadTack rubber with recycled silica.
Key specifications
Drop
10 mm
All models average 6.8 mmDifference from average +3.2 mm
Average of 986 models
Stack (heel)
-
All models average 34.3 mmDifference from average -
Average of 810 models
MSRP
$160.00 USD · US · Tax excluded
All models average $165.57Difference from average −5.57 USD
Average of 680 models
This modelAll models average
- Stack (forefoot)
- -
- Carbon plate
- No
- Midsole
- DNA LOFT v3
- Outsole
- RoadTack rubber
- Use cases
- Daily / Long Run
Weight notes Men’s 277.8 g rounded to 278 g. Japan launch coverage lists approximately 280 g in size 27 cm.
IN CONTEXT
Specs in context
Weight × stack788 models shown
Use arrow keys to select a model, Home and End to reach the first and last, and Enter to open its details.
Weight distribution973 models
Use the left and right arrow keys to inspect a range, Home and End to reach the first and last, and Escape to dismiss its details.
95 g385 g
This model 278 gAll models average 268.9 gDifference from average +9.1 g
Drop distribution986 models
Use the left and right arrow keys to inspect a range, Home and End to reach the first and last, and Escape to dismiss its details.
0 mm12 mm
This model 10 mmAll models average 6.8 mmDifference from average +3.2 mm
Stack distribution810 models
Use the left and right arrow keys to inspect a range, Home and End to reach the first and last, and Escape to dismiss its details.
5 mm60 mm
This model -All models average 34.3 mmDifference from average -
MSRP distribution · USD · US · Tax excluded680 models
Use the left and right arrow keys to inspect a range, Home and End to reach the first and last, and Escape to dismiss its details.
$50.00$500.00
This model $160.00All models average $165.57Difference from average −$5.57
Unknown values are excluded. Shoe sizes and measurement conditions vary, so use these averages and distributions as a guide when comparing specifications.
BY REGION
Release dates & MSRP
SERIES HISTORY
Glycerin series
2026-02-02
Glycerin 23
300 g · 38 mm · 8 mm drop
2025
2024-01
2022-07-26
2021-02-19
Glycerin 19
289 g · - · 10 mm drop
CHECK THE SOURCES
Sources & notes
The earlier page supporting the current Japan list price is no longer available; launch coverage listed ¥22,000. Stack remains unresolved because figures and measurement scope differ.
Product specificationsChecked 2026-10-21Release informationChecked 2026-10-21brooksrunning.co.jpChecked 2026-08-15brooksrunning.comChecked 2026-08-15brooksrunning.comChecked 2026-08-15brooksrunning.comChecked 2026-09-14
Our data policy