Brooks Glycerin GTS 21 – Men’s Running Trainers


These Brooks Glycerin GTS 21 running trainers for men are the most cushioned trainers in the Brooks line-up, helping you to keep your natural stride, even when you’re tired.

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Royal Mail Tracked 48 - Free.
Royal Mail Tracked 24 - £7.99.
Royal Mail Special Delivery (Guaranteed by 1PM) - £11.99.

More information can be found on our delivery information page. For special and international orders, please contact us directly.

Returns and exchanges

If you're not completely satisfied with your purchase for any reason, you can return it to us for a full refund or exchange within 14 days of receiving your order.

To arrange a return, please see our returns page.

Sizing and advice

If you need a little help with your shopping, or just want some advice, our team is here to help you. Call 01707 95 3313. We are open from Monday to Friday 09:30 - 17:30, and Saturdays 09:30 - 17:00.

Alternatively, book your free personal shopping appointment for expert advice from trusted shoe-fitters. You'll have the chance to talk about your feet and what you want to wear. It can be done at a time that suits you and from the comfort of your own home.

Please see our appointment page to book an appointment.

Health benefits

Our health benefits content is created in conjunction with the Royal College of Podiatry. It is not a substitute for professional assessment, diagnosis or treatment. To find out the health benefits that this product has, please see the additional information tab.


Each style of footwear is different, as is your feet. There are no two pairs of feet that are the same! For these reasons, we recommend reading out fitting guide once you receive your order.

Part of the Glycerin series’ guarantee of supremely soft underfoot technology and silky-smooth transitions, the Brooks Glycerin GTS 21 provides additional support for your feet, helping you to keep your natural stride; even when you’re tired.

If you don’t already know about the Glycerin, these running trainers are the most cushioned in the brand’s collection. We recommend them for this and their fit. However, if you need more support, the go-to-support (GTS) system in this version helps you keep your natural stride, even when you’re tired. For those of you who have stability issues in your lower limbs, such as when your knees move inward, or if your toes point in or out when you walk, these trainers are just what you need.

Perhaps the most intriguing feature of the Glycerin GTS 21 is the nitrogen-infused DNA LOFT v3 foam, which gives you the softest cushioning. The result? Comfort when you need it – upon impact – so your feet don’t take a hit, as well as a balanced, lightweight blend of responsiveness for a better toe-off. Those who require something to wear for extended periods of time will therefore love the amount of support offered.

What’s more, is that this trainer has been constructed with a FitKnit upper. This is breathable material that moulds to your foot for a blend of stretch and compression. The configuration is designed to move with you, while the materials feel extremely soft against your feet. Plus, with a removable insole, those who have more specific needs won’t need to worry about sizing, as the Glycerin can accommodate custom orthotics.

It’s no coincidence that the promotional videos feature runners who appear as if they’re defying gravity. Wearers describe their experiences as having great arch support, while others speak of the relief when dealing with plantar fasciitis and heel pain. Lace these up and wear them to the office, the gym, while shopping in the high street, or for a casual walk in the park.

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