ASICS Gel-Kayano 33 vs Brooks Glycerin GTS 23

Ride profile: high cushion , mild_stability stability .

• A softer, better-balanced Kayano than before — comfortable and durable stability shoe for easy running and overpronators, though heavy with mediocre energy return.

  Ride:Softer than previous Kayano versions with a natural, non-intrusive stability feel; best suited to easy running only.

  In their words: "still one of the best stability shoes out on the market"

  — Ben Parkes , source

• Briefly mentioned as a stability daily trainer option for runners who need more support.

  — Ben Is Running , source

• The Kayano 33 successfully updates the heritage stability formula with a more universal fluid support structure and a wider, more comfortable fit than the 32, while adding forefoot pop and bringing weight down to 10.5 oz — making it a credible everyday trainer and marathon option for stability-seeking runners.

  Ride:Dual-density FF Blast midsole with softer top layer and firmer base. Fluid stability structure wraps around the whole foot (wishbone-like outsole pattern) for more universal stability than the medial-specific 32. More forefoot pop-off than previous versions. Less clunky and stiff than older Kayanos.

  Fit:Runs wider than the 32; reviewer went from 4E in the 32 to a standard D in the 33 — those who needed an extra width or half size up on the 32 may be true to size in the 33.

  In their words: "more universally stable" · "stable, it's bouncy, it's got support" · "fluid feel to it"

  — Run Moore , source

• The introduction of Flight Foam Blast Max transforms the Kayano 33's ride into something dramatically softer than its predecessor, but at 314g and £180 it remains overpriced and overweight — the reviewer prefers the cheaper Saucony Omni ST 23 and Nike Structure Plus for most stability-seeking runners.

  Ride:Ride massively improved over the Kayano 32 due to the new Flight Foam Blast Max top layer — much softer underfoot. Firmer Blast Plus on the bottom stiffens and stabilises the ride. Pure GEL tech in the heel adds cushioning. Full-length rubber outsole and wide base enhance inherent stability. New Fluid Support geometry system felt no different from previous 4D Guidance to the reviewer.

  Fit:Fits true to size with a decent-width heel and acceptable lacing lockdown.

  In their words: "night and day compared to the previous model" · "massively over-engineered" · "built-up support for people who really need it"

  — FORDY RUNS , source

Ride profile: high cushion , mild_stability stability .

• A heavier, firmer, more rigid take on the Glycerin GTS that shifts toward motion-control feel; reviewer misses the softer v22 midsole and finds v23 clunky for his mechanics.

  Ride:Firmer, stiffer ride with rigid rearfoot and midfoot; GuideRails feel less post-like than v22 but stability now comes from overall rigidity rather than a soft center with side bumpers.

  Fit:Wider fit than v22 but runs short; very stiff heel counter; thick non-gusseted tongue. Those between sizes should try in store or size up a half.

  In their words: "a lot firmer" · "fits short" · "moving in more of a motion control direction"

  — Doctors of Running , 30 mi tested , source

• Moore's shop stocks the GTS 3:1 or 4:1 over the neutral version; it offers light stability in the same cushioned Glycerin package and is Moore's go-to recommendation for most walk-in customers.

  Ride:Same mold as the neutral Glycerin 23 with a subtle amount of pronation control; smoother transition than previous Glycerins.

  Fit:Wider forefoot than previous version; sizing is accurate.

  In their words: "a little bit of pronation control" · "not like there's a crazy amount of stability"

  — Run Moore , source