Sizing guide Updated

Brooks Glycerin 22 Sizing Guide: Does It Run Small or True to Size?

Short answer

The Brooks Glycerin 22 is a premium max-cushion daily trainer that aligns with traditional TTS length parameters under standard industry metrics, yet introduces a highly contoured internal volume profile. Due to a luxurious, heavily padded tongue and an ultra-thick heel collar, the overall step-in feel is exceptionally snug and tight across the instep.

Runs true to size

Cross-sizing: what size to buy

Find a shoe you already own and read across to the Brooks Glycerin 22 size to buy.

  • ASICS GEL-Nimbus 26

    Your usual Buy
    US 10.0 10.0
    EU 44 44
  • New Balance 1080 v14

    Your usual Buy
    US 10.0 10.0
    EU 44 44
  • Saucony Triumph 22

    Your usual Buy
    US 10.0 10.0
    EU 44 44
  • HOKA Clifton 9

    Your usual Buy
    US 10.0 10.0 or 10.5
    EU 44 44 or 44.5

Fit Notes

ASICS GEL-Nimbus 26
The GEL-Nimbus 26 features a highly flexible, stretchy knit upper that offers a higher-volume, cloud-like compression. Conversely, the Glycerin 22 employs a denser, less flexible creel jacquard mesh combined with dense padding that delivers superior midfoot and heel lockdown. Standard-width runners can order their true size (US 10.0 / EU 44), but those accustomed to the pillowy, unstructured stretch of the ASICS upper should expect a noticeably more locked-in, secure fit across the instep and a shallower vertical toe box ceiling.
New Balance 1080 v14
The New Balance 1080 v14 uses a flexible and loose-fitting upper that easily accommodates high-volume feet underfoot, paired with an extremely soft midsole. The Glycerin 22 counters this with a much tighter, more secure creel jacquard mesh and a firmer DNA Tuned platform that prevents foot fatigue through the gait cycle. Runners can stay true to size (US 10.0 / EU 44), but will experience a significant shift from a loose, sponge-like feel to a structured, highly secure performance wrap.
Saucony Triumph 22
Both shoes are premium, comfortable daily cruisers, but they differ in foam chemistry and geometry. The Triumph 22 uses a bouncy, PEBA-based foam with a lower 8 mm drop, whereas the Glycerin 22 provides a more durable, shock-absorbing nitrogen-infused EVA foam with a traditional 10 mm drop. Sizing runs equivalent lengthwise, allowing a true-to-size purchase (US 10.0 / EU 44), though the Glycerin 22 provides far more diverse width options up to a true 4E.
HOKA Clifton 9
The Clifton 9 features a signature bucket-seat construction that runs narrow at the midfoot arch, frequently causing blistering and forcing runners to size up just to achieve essential lateral relief. The Glycerin 22 features a wider, more accommodating midfoot last that eliminates this arch rubbing entirely. Applying the compensation factor: if you normally size up in HOKA solely to clear midfoot width restrictions, you should return to your true length (US 10.0 / EU 44) for the Brooks. However, if you require overall high volume or thicker socks, a half-size up to US 10.5 (EU 44.5) helps mitigate the Glycerin's restrictive 23.6 mm vertical toe box ceiling.

Sizing FAQ

Does the Brooks Glycerin 22 run true to size?

The physical length of the Brooks Glycerin 22 is true to size when compared to standard running shoe baselines. However, the physical volume inside the shoe is heavily restricted. The plush, heavily padded tongue and thick heel collar occupy substantial internal space, making the step-in feel exceptionally snug and tight across the instep. Additionally, the vertical toe box height is quite shallow at 23.6 mm. Runners with low-volume feet can comfortably stay true to size, but those with high-volume feet, individuals who experience foot swelling on long runs, or runners who prefer thick athletic socks should opt for a half-size larger.

Is the Brooks Glycerin 22 good for wide feet?

Yes, the Brooks Glycerin 22 is an excellent option for wide feet due to its stable platform and extensive range of width profiles. The standard medium width offers a spacious 96.3 mm forefoot and an improved 73.7 mm big-toe width that accommodates moderately wide feet without pinching. For truly wide feet, Brooks provides dedicated Wide (2E for men, D for women) and Extra-Wide (4E for men, 2E for women) options. The availability of a true 4E width in a premium neutral shoe is highly beneficial for structural pathologies like bunions, hammertoes, or metatarsalgia, allowing natural metatarsal splay without forcing runners to size up excessively in length.

How is the arch support on the Brooks Glycerin 22?

Arch support in the Glycerin 22 is structured yet non-intrusive, sitting on a highly stable neutral platform. Instead of hard physical stability posts, it utilizes a broad outsole base and a structured heel counter to minimize excessive pronation naturally. The moderate midfoot arch contour accommodates low, medium, or high arches comfortably and is exceptionally welcoming to prescription orthotics or custom insoles due to its deep heel cup. However, its traditional 10 mm heel-to-toe drop shifts landing loads forward to protect the Achilles and calf complex, which can occasionally cause mild midfoot fatigue or lower back discomfort over long distances for runners unaccustomed to this angle.

Specs & Sizing

Weight 289 g
Retail price $165
Price on Amazon $124.95 - $165
Release year 2025
Upper Engineered double jacquard knit
Midsole Nitrogen-infused DNA Tuned cushioning
Outsole Durable rubber with good grip
Technologies DNA Tuned (larger cells in heel, smaller in forefoot), Broad platform for transitions
Fit & sizing True to size, but consider half size up if wide feet or for more room