Run like the road was made just for you with the Brooks Glycerin 23. Featuring the next generation of nitrogen-infused foaming, these shoes bring the exact balance of comfort and responsiveness your run deserves. The heel features large cells for plush landings, while the forefoot features small cells for responsive toe-offs. The cutting-edge foam eliminates unnecessary layers, creating a seamless sensation from strike to push-off. Turn every stride into a soft, springy, distraction-free joyride with the Brooks Glycerin 23. Brooks Glycerin 23 features: Long miles, recovery runs, and all-day wear all feel easier when your shoes stay soft, stable, and smooth underfoot. The Brooks Glycerin 23 is built for that plush, protected ride, pairing a breathable engineered knit upper with nitrogen-infused DNA Tuned cushioning for comfort that stays consistent from landing to toe-off. Size & Fit GuidanceFor the best fit, most runners can start with their usual size. If you prefer extra room up front, wear orthotics, or are between sizes, a half size up may feel best, and wide widths are a popular pick for broader feet. Best ForIdeal for daily training, long walks, treadmill sessions, and long hours on hard surfaces when premium cushioning matters most. Cushioning & Road FeelReviewers consistently describe the ride as cloud-like, soft, and easy on joints without feeling flat. This is a comfort-first running shoe that favors impact protection over a low-to-the-ground feel, making pavement, treadmills, and concrete feel noticeably smoother. Break-In & DurabilityMany reviewers say the Glycerin 23 feels comfortable right away, with little to no break-in needed. Cushioning and support are praised for holding up well through everyday runs, walks, and all-day wear, while high-mileage users may want to rotate pairs and keep an eye on outsole wear over time.