Advice for Road Runners: The Brooks Women's Glycerin GTS 21 Running Shoes offer more support in comparison to the Brooks Glycerin. 

GTS stands for 'go-to-support' and means they feature Brooks' signature GuideRails™ support system.

Underfoot Feel

The nitrogen-infused DNA LOFT v3 cushioning in the Brooks Glycerin GTS 21 Running Shoes delivers a protective underfoot feel. Even though it's not overly soft, the midsole should feel very cushioned. 

The added support stems from the use of Brooks GuideRails™. The GuideRails™ system works in a similar way to the bumpers on a bowling alley; it supports your body in its natural motion path while keeping excess motion in check.

Overall, the Glycerin GTS 21 midsole is all about comfort and support.

Upper Fit

Comfort is the name of the game when it comes to the Brooks Glycerin GTS 21 Running Shoes' upper. The engineered warp knit upper feels soft, supportive, and very breathable. 

Premium fabrics and added cushioning on the tongue and around the heel collar also enhance the step-in feel.

Ideal Run Type

The Brooks Women's Glycerin GTS 21 Running Shoes are likely to feel at their best on your slower paced runs. Especially when your aim is to hold a consistent pace for the duration of your run. Given the level of cushioning on offer, they are one of the best stability running shoes for long runs.

Technical Features

• Approximate weight: 252.3 grams
• Drop: 10 mm
• Forefoot stack height: 18 mm
• Rearfoot stack height: 28 mm

Brooks Run Happy Promise

Take your Brooks gear for a 90-day trial run. Put it through its paces and sweat in it as much as you want. If you are not 100% satisfied, return it to us for free.

Sizing Advice

Shoe size is a personal preference and everyone's feet are different, but we want to ensure you avoid any pain or discomfort from bruised toenails, rubbing, blistering or pins and needles.

Your running shoes should have enough width to allow you to spread your toes and should have some space at the front (we recommend having a half to one thumb's width of space from the end of your longest toe to the front of your running shoes).

This usually means that your running shoe will be at least a half size bigger than your regular shoe size though this can vary from brand to brand.