Finding the perfect fit is essential when choosing running shoes, and the Brooks Glycerin series is no exception. Known for its plush cushioning and comfort, the Glycerin is designed to support your feet through long runs and daily training. However, to maximize these benefits, selecting the right size is crucial. This Brooks Glycerin size guide will help you understand sizing, fit considerations, and tips to ensure your shoes feel just right from the first step.

1. Understanding Brooks Glycerin Sizing
Brooks running shoes, including the Glycerin, generally run true to size, but individual preferences and foot shapes can influence the ideal fit. The Glycerin’s slightly snugger fit in the midfoot means it’s important to try the shoe on or measure carefully before purchasing.
2. Key Fit Features of Brooks Glycerin
- Width: Available in standard (D for men, B for women) width. Wide options are limited, so runners with wide feet may find the fit snug.
- Toe Box: The Glycerin offers a moderately roomy toe box that allows for natural toe splay without feeling overly spacious.
- Heel: The shoe’s heel collar is padded and designed to hug your heel securely without causing irritation.
- Arch Support: Built for neutral runners, the arch support suits those with normal to medium arches.
3. How to Measure Your Foot for Brooks Glycerin
To get the most accurate size for your Brooks Glycerin shoes, follow these steps:
- Step 1: Place a piece of paper on a flat floor surface.
- Step 2: Stand on the paper with your full weight, wearing the socks you plan to run in.
- Step 3: Trace your foot’s outline with a pencil held upright.
- Step 4: Measure the length from the heel to the longest toe and the width at the widest part.
- Step 5: Compare measurements to Brooks’ size chart for men or women to find your recommended size.
4. Tips for Trying on Brooks Glycerin Shoes
- Try at the end of the day: Feet tend to swell throughout the day, so trying shoes later ensures a better fit during runs.
- Wear running socks: Bring the socks you typically run in to replicate true fit.
- Leave a thumb’s width: Aim for about a thumb’s width of space between your longest toe and the shoe’s end.
- Check for snugness: The midfoot should feel secure without tightness; the heel should lock in place without slipping.
- Walk and jog: Test the shoes indoors by walking and jogging briefly to assess comfort and fit.
5. What to Do If Your Feet Are Wide or Narrow
- Wide feet: Brooks Glycerin may feel narrow for wide feet, especially in the midfoot. Consider sizing up or exploring other Brooks models like the Ghost, which offers more width options.
- Narrow feet: If your feet are narrow, the Glycerin’s snug fit is generally beneficial. Using thicker socks or heel grips can improve fit further.
6. When to Size Up or Down
- Size up: If you have wider feet, experience swelling, or prefer extra room for toe movement, try going a half size larger.
- Size down: If you have very narrow feet and the Glycerin feels too roomy, sizing down might help achieve a snug fit, but avoid shoes that feel tight.
7. Using Brooks Glycerin with Orthotics
If you use custom orthotics, Brooks Glycerin shoes accommodate removable insoles, but be sure to factor the orthotic thickness into your sizing decision. You may need a half size larger to accommodate them comfortably.
Final Thoughts: Getting the Perfect Brooks Glycerin Fit
Finding the right Brooks Glycerin size is key to unlocking its renowned cushioning and support. By measuring your feet accurately, considering your foot shape, and following fit tips, you can select the size that will keep you comfortable on every run. Remember, a well-fitting shoe reduces injury risk and enhances performance, making your Glycerin experience all the more enjoyable.