How to Choose Running Shoes

Made with more supersoft cushioning and updated, breathable uppers, the women's Glycerin 21 road-running shoes offer an improved fit, plush comfort and smooth transitions.
Imported.
View the Brooks Glycerin Product LineView all Brooks Women's Road-Running ShoesBest Use | Running |
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Running Shoe Support | Neutral |
Running Shoe Cushioning | Maximum Cushion |
Heel-to-Toe Drop (mm) | 10 |
Heel Stack Height (mm) | 31 |
Forefoot Stack Height (mm) | 21 |
Footwear Height | Ankle |
Footwear Closure | Lace-up |
Upper | Engineered warp knit |
Midsole | DNA LOFT v3 |
Outsole | RoadTack rubber |
Vegan | Yes |
Weight (Pair) | 1 lb. 1.6 oz. |
Gender | Women's |
5 | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12 | 13 | |
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U.S. Women's | 5 | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12 | 13 |
U.S. Men's | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11.5 |
EU | 35.5 | 36 | 36.5 | 37.5 | 38 | 38.5 | 39 | 40 | 40.5 | 41 | 42 | 42.5 | 43 | 44 | 44.5 | 45.5 |
Sizes along top of chart are U.S. Women's sizes. Correlating U.S. Men's sizes and EU sizes provided for clarity.
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Brook has got me again.. I am a healthcare staff at the hospital, I had to work/stand on my feet for over 8 hrs a day. Brooks is super comfortable and light weight. My feet couldn't be happier.
The glycerin 21 is even more comfortable than the 20. They are supportive and light and my running feels less impactful on my feet. I have been a Brooks glycerine fan for 15 years.
[This review was collected as part of a promotion.] Immediately after putting these on, I noticed the support in my knees and hips and it was so comfortable. I am mostly running for fun but also to lose weight so the fact that it makes running more comfortable and stable for me at a higher weight is a huge plus. The fit is true to size and conforms to my feet well, if you have a wide foot I would recommend sizing 1/2 a size up. The only issue I noticed was the shoes rubbing on the back of my heel but once breaking them in I am hoping that issues goes away. The black color is very sleek and will match any outfit. These are my new go-to running shoes and will help me reach my fit was goals of 2024.
[This review was collected as part of a promotion.] I've tried so many different sneakers, and I pretty much wear a different pair for each activity (work/casual/exercise). I work on my feet all day, and try to get about 3 miles of either walking or running in a day, usually while pushing a stroller. I've been wearing these for absolutely everything. They fit perfectly on my narrow feet and I haven't had any foot pain since switching. It's winter now and these are breathable but not cold on my feet. They have pretty thick soles so I don't feel the impact of the pavement, either. I'll definitely be getting another pair when these wear out, and it doesn't hurt that they look good, too!
[This review was collected as part of a promotion.] I have always been an Asics girl but I haven't liked the feel of them in the last couple of years. I have been disappointed. After doing my research, I decided to give Brooks Glycerin a try. With the high cardio classes I do, these are perfect. I absolutely love them. They are so supportive with all the jumping I do, and my feet feel very spoilt with the comfort of the plush sole. I need plenty of grip during my workout, and these don't disappoint, I feel confident in my shoes and I am proud to wear them. Looks like Brooks are my new favourites.
[This review was collected as part of a promotion.] I enjoyed that these have so much cushion and really help to protect me feet as well as support my legs and back. I do think that the design is a bit too trendy for me with the really thick heal height. All black was a little bit boring as well and made me feel like I was working at a place that requires all black shoes, rather than having stylish running shoes. I think that the fabric is really solid and will last a long time. It seems really durable. I liked how much cushion that these have but wish they didn’t look so over the top because I’m not sure how much I’ll wear them out of the house as a fashion statement.
[This review was collected as part of a promotion.] These Brooks Glycerin 21 running shoes are so amazing and allow me to comfortably run each day. I love the rocker on the front of these shoes that helps propel me with each step. This makes it so much easier to me because I feel like I am gliding as I run. The shoes are breathable and have plenty of padding on them so my feet are comfortable and well protected. The nitrogen injected soles are thick and have just the right amount of grip on them. If you love to run or be active these are some of the best running shoes that I have tried. They are true to size and fit me perfectly. Great shoes I would recommend.
[This review was collected as part of a promotion.] The Glycerin 21 shoe is a very lightweight running shoe. The sole is responsive and has good grip for quick movements while doing cross training workouts. I found the fit around my ankle and heel to be too stiff and uncomfortable, that it dug in after extended wear. However, the sole provided a good amount of support and cushion, as I prefer a running shoe with substantial cushion to prevent any knee pain. Lastly, the mesh fabric is very breathable. In all, this running shoe has a lot of standout features but the discomfort around my ankle will prevent this from being my every day workout shoe.
[This review was collected as part of a promotion.] I’ve tried several different running shoes over the years while training for a marathon, and these are by far my favorite. I struggle with heel to toe rolling movement as I have very flat feet, these shoes made a huge improvement. I have less leg fatigue during my runs and feel like I’m moving faster. Even my occasional knee pain is gone. I love the design and all black coloring, I’m not worried about my shoes getting dirty on my long runs anymore. I also love the wider toe area, I’m very prone to ingrown toe nails and I think this will help a lot with preventing that. I did notice on a rainy day that my shoes felt a little slick on the pavement. Otherwise, these shoes are perfect and I’m obsessed.
This is my first pair of Brooks. I went to a store to be analyzed and fitted. I have high arches and use an insert specifically for running. The shoes fit my feet perfectly. Plenty of toe box area. It’s feels like a hug all around. The comfort and cush while walking and running beats any other brand I’ve used in my opinion. I feel like I bounce when running. The durability is amazing thus far. I don’t run but a few miles 3 times per week, but the shoes still look new after 4 months. I purchased another pair during the winter sale. Very happy and satisfied with the Glycerin 21s!