As you can see in the comparison below, there is not much difference on paper between the Brooks Ghost 18 and the Glycerin 23.
The main place these shoes differ is the cushioning: the Glycerin has 38 mm under the heel versus 36 mm for the Ghost. The gap grows under the forefoot because of the Ghost’s more pronounced drop (10 mm versus 8 mm), which gives 30 mm for the Glycerin and 26 mm for the Ghost.
The Glycerin carries about 20 g / 0.7 oz more and its responsiveness sits slightly behind the Ghost’s, but the Ghost can’t claim to be lively either.
Ghost or Glycerin: which should you choose?
As you can see, these models are very close in 2026. Our advice is to try both and choose the one that feels more comfortable for you.
That said, the Ghost is one of the brand’s carbon-neutral running shoes (CarbonNeutral® certification), no small argument in a climate emergency!
