Brooks Glycerin Flex vs Ghost Amp

Glycerin Flex or Ghost Amp? Here’s how they compare on feel, fit, brand specs and price, from the fitting team at The Run House.

The short answer

Want Glycerin comfort with a more flexible, connected feel? Get the Glycerin Flex.

Want a lighter, faster Ghost for daily runs and uptempo days? Get the Ghost Amp.

Get the Glycerin Flex if

• You like a firmer, more stable feel
• You’re on your feet all day or walk a lot
• You’d rather spend $20 less

Get the Ghost Amp if

• You want the softer, more cushioned ride
• You want more bounce and energy back
• You’ll use it for tempo runs and workouts
• You need a touch more room than the Glycerin Flex gives

On the run

Glycerin Flex: The flexible Glycerin. Comfortable and stable at the heel, with a midfoot flex groove that makes it more flexible than the regular Glycerin. The ride is on the firm side with little bounce.

Ghost Amp: A lighter, quicker Ghost. Lighter and quicker than the regular Ghost, with a very flexible, comfortable ride that handles short and long runs. The new foam is less bouncy than its looks promise.

Specs side by side

Stack, drop and weight come from each brand’s own website. Numbers marked * aren’t published by the brand and come from other published specs. Weights are for the size each brand quotes. Expected life is our estimate.

Fit

Glycerin Flex. True to size with a premium knit upper and secure lockdown. Best for narrow feet; the toebox is narrow.

Ghost Amp. True to size with excellent lockdown and a premium knit upper, but the toebox is tapered. Wide available.

Try them on

Come try on both at The Run House in Walpole, Needham or Falmouth. Gait analysis is always free.

Shop the Glycerin Flex · Shop the Ghost Amp · Compare other running shoes