Brooks

Glycerin GTS 21

Brooks Glycerin GTS 21

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Overall

#202 in

Road Running Shoes

according to Reddit Icon Reddit

Sentiment score59% positive
16
5
6

Top Pros

Top Cons

Last updated: Aug 11, 2026

Reddit Reviews

Reddit Iconalebardamu
4 months ago

Hey everyone! I use custom orthotics and I'm struggling to find *the one* for easy/long run days. Here's what I've tried and why nothing stuck: **What worked (partially):** 🟢 **Puma ForeverRun Nitro 2:** Loved the fit: snug midfoot, roomy toe box. But the foam felt dead and heavy underfoot. Shape = 10/10, ride = 4/10. 🟡**Saucony Tempus:** Foam was *incredible*, exactly what I want in terms of responsiveness. But pinky toe was hanging off the edge, toe box too narrow. 🟡 **Brooks Glycerin GTS 20:** Comfortable and stable, but the ride felt flat and uninspiring. Needed more energy return. **What I already own:** Saucony Endorphin Speed for speed work, so I'm covered on that end. **What I'm looking for:** * **Use:** daily trainer / long runs * **Gait:** overpronator (significant), using custom orthotics so even neutral options are ok * **Must have:** wide-ish toe box + snug midfoot lockdown * **Dream foam:** something bouncy and responsive à la Tempus, NOT mushy/dead like the Puma Any suggestions? Topo, New Balance, Asics, Saucony, anything, I'm open. Thanks in advance!

Reddit IconBella_Climbs
8 months ago

I also loved the Glycerin GTS 21, though I did have to size up a whole size and a half(normal shoe size is a 7, I have to get Brooks in an 8.5). My current favorite replacement is the Saucony Hurricane 25s. I also have to go up a size and a half in these. I have narrow, flat feet so I need a supportive shoe and these are great!

Reddit IconFultium
3 months ago

I got brooks glycerine GTS 20 for my pronation but they don't seem to help at all, on the contrary, they even seem to push my feet more to the inside rather than the outside. Before I had the adrenaline GTS22 and they were good; but when I bough the Adrenaline GTS 23 they were also not so good. I have a pretty extreme case of overpronation so I do need good shoes (I also use a support sole). https://preview.redd.it/anhkj2d6cyxg1.jpg?width=3546&format=pjpg&auto=webp&s=3782841f31463c1d1a6da7e11a907b11af765d3a

Reddit Iconjackarywoo
2 months ago

Brooks Glycerin GTS 21 & 22 (just bought the 23 as well) for everyday, long runs, basically everything but races. AF3 is my race shoe and I adore it

Reddit IconKindly_Cap_2562
8 months ago

I have no advice, but I know how you feel and can commiserate with you. I owned 4 pair of the glycerine gts 21s. I put 300-400 miles on all of them. Got a pair of 22s, and they are trash. They feel really cheap to me. I lost 2 toenails from them just testing them out of shorter runs. I did start tying them with a heel lock and it has helped. I am not happy with them at all, but haven’t really found anything else that’s any better.

Reddit IconOnly_Hand_307
8 months ago

Hi guys - I'm a heavy over-pronator who does about 25km/week of fairly easy running - about 4:30-5:00km/min. would love your recommendations for a new pair of daily trainers based on what I've run in and enjoyed/not before: * Brooks Glycerin GTS 20 - My least favourite, toe and heel both collapsed after 400km, no fun to run in (heavy, sluggish) and couldn't wait to get to a respectable mileage before binning. * Saucony Guide 15 - didn't get on with these, felt very high and uncushioned and actually not that stable. got them discounted so gave up after 50km. * Saucony Tempus 1 - Loved them at first but found my feet and ankles hurting after running about 3-400km in these shoes - maybe a red herring. * Brooks Adrenaline GTS 21 - Enjoyed at the time as they were my first proper running shoe but think I'd want something more 'fun' to run in nowadays. * ASICS Gel Kayano 28-31 - Keep buying these and they're good, not any fun to run in though and do feel heavy. Ideally I'd love something that is more cushioned than the Guide/Adrenaline, but not as heavy as the Gel Kayano/Glycerin. Is there a sweet spot here and is that sweet spot the Saucony Tempus 2?!

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