Brooks Glycerin Flex

Brooks Glycerin Flex review: what runners say

Fit

True to size, flat knit sock-like upper that wraps the foot with precision. Not available in wide widths; the toe box runs narrow for wider feet.

Feel

Medium-high cushioning with dual-density DNA Tuned foam: firmer heel for impact, softer forefoot for transition. Flex grooves and pods create a sense of independent movement underfoot; the ride is firmer than plush, with decent responsiveness at sustained paces.

Durability

After 150 km the foam shows no breakdown or loss of responsiveness; wear is concentrated on the outsole. Rubber coverage is generous across contact zones, suggesting solid overall longevity.

Best for

Versatile daily trainer for easy runs, long runs, and pace variations. Suited for runners up to 165–175 lb without significant overpronation, with a midfoot or forefoot strike. Not suited for speed sessions.

Weak points

Narrow toe box, no wide option. The tongue is not gusseted and shifts during lacing. The added flexibility, while present, produces no perceptible difference from the standard Glycerin in everyday use.

We read and watched 6 sources for you· 3 video · 3 articles