Brooks Adrenaline GTS 25 vs Brooks Glycerin 23

Brooks Adrenaline GTS 25

± Divisive

Softer DNA Loft v3 and a lower 10 mm drop smooth the heel transition and make easy miles more comfortable, but the ride is still firm and short on energy return, and some testers find it dull.

Brooks Glycerin 23

± Divisive

Plush and smooth at easy paces, but reviewers split on whether the extra forefoot foam makes it more modern or just heavier and flat, with little help when the pace lifts.

Brooks Adrenaline GTS 25

+ Praised

More foam in the heel and forefoot takes the edge off landings and suits daily mileage, though lab tests call it average and the forefoot firms up over longer runs.

Brooks Glycerin 23

+ Praised

A soft heel and noticeably more forefoot foam than the Glycerin 22 give protective, balanced cushioning that holds up on long runs.

Brooks Adrenaline GTS 25

± Divisive

A roomier forefoot and soft mesh improve comfort for many, but the tapered toe box, thick warm upper and heavily padded heel collar divide testers.

Brooks Glycerin 23

+ Praised

Premium, padded and comfortable with a roomy toe box, though the thick knit runs warm and the fit suits lower-volume feet unless you choose a wide.

Brooks Adrenaline GTS 25

+ Praised

Reviewers generally expect a long-lasting daily trainer, with strong outsole wear scores, though one long-term tester saw average wear and early foam compression.

Brooks Glycerin 23

+ Praised

Full-coverage rubber, a tough knit upper and little lab wear point to a long life, which is the shoe's strongest argument at this price.

Brooks Adrenaline GTS 25

+ Praised

Grippy rubber handles wet roads and light paths well, with only the exposed foam limiting off-road use.

Brooks Glycerin 23

+ Praised

Reliable on wet and dry roads, with lab traction well above average and enough coverage for light paths.

Brooks Adrenaline GTS 25

+ Praised

GuideRails and a broad, flared base give noticeable but unobtrusive medial support that holds up when form fades.

Brooks Glycerin 23

+ Praised

The broad platform and firm forefoot make it one of the more planted neutral trainers, though it is not a support shoe.

Brooks Adrenaline GTS 25

± Divisive

At $155 it is fairly priced for a durable stability trainer, though some reviewers say lighter, livelier rivals offer more for similar money.

Brooks Glycerin 23

± Divisive

The durability partly justifies $175, but several reviewers say it is too expensive for a heavy, plateless trainer and point to the cheaper Ghost or Glycerin Flex.