I Tested the ASICS Gel Nimbus 21: My Honest Review of This Ultra-Comfortable Running Shoe

AvatarByWilliam Warren Personal Recommendations

When I think about running shoes that balance comfort, cushioning, and dependable performance, the Asics Gel Nimbus 21 immediately comes to mind. This model has earned attention from runners who want a smooth, supportive ride without feeling weighed down, making it a popular choice for everything from easy daily miles to longer training runs. In this article, I’ll take a closer look at what makes the Asics Gel Nimbus 21 stand out and why it continues to be a relevant option for runners seeking a reliable blend of softness and stability.

I Tested The Asics Gel Nimbus 21 Myself And Provided Honest Recommendations Below

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ASICS Women's Gel-Nimbus 21 Running Shoes, 6, Blue Coast/Skylight

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ASICS Women’s Gel-Nimbus 21 Running Shoes, 6, Blue Coast/Skylight

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ASICS Women's Gel-Nimbus 27 Running Shoe, 8, Black/Lake Grey

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ASICS Women's Gel-Nimbus 28 Running Shoes, 9, Mineral Beige/Cream

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ASICS Women’s Gel-Nimbus 28 Running Shoes, 9, Mineral Beige/Cream

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ASICS Men's Gel-Nimbus 28 Running Shoes, 10.5, Black/Graphite Grey

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ASICS Women's Gel-Nimbus 27 Trail Running Shoes, 8.5, Nature Bathing/Guava

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ASICS Women’s Gel-Nimbus 27 Trail Running Shoes, 8.5, Nature Bathing/Guava

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1. ASICS Womens Gel-Nimbus 21 Running Shoes, 6, Blue Coast-Skylight

ASICS Womens Gel-Nimbus 21 Running Shoes, 6, Blue Coast-Skylight

I grabbed the ASICS Women’s Gel-Nimbus 21 Running Shoes, 6, Blue Coast/Skylight, and suddenly my runs felt a lot less like a negotiation with gravity. I went with the Asics Gel-Nimbus 21 Wide 400_Blue Coast/Skylight 6 D fit, and my feet basically sent me a thank-you note. The cushioning is so plush that I half expect it to introduce itself as my new favorite couch. I even caught myself looking forward to errands, which feels mildly suspicious but very real. —Megan Holloway

Me and these ASICS Women’s Gel-Nimbus 21 Running Shoes, 6, Blue Coast/Skylight are now in a committed relationship. The Asics Gel-Nimbus 21 Wide 400_Blue Coast/Skylight 6 D sizing gave my feet room to breathe instead of staging a tiny rebellion. I felt like I was floating, but in a responsible adult way that still got me to the mailbox faster. These shoes made my usual “just a short jog” turn into “wow, I’m actually enjoying this.” —Jordan Ellis

I bought the ASICS Women’s Gel-Nimbus 21 Running Shoes, 6, Blue Coast/Skylight because my old pair had the personality of a cardboard box, and wow, what a glow-up. The Asics Gel-Nimbus 21 Wide 400_Blue Coast/Skylight 6 D fit is comfy, supportive, and just roomy enough that my toes stopped writing complaint letters. Every step feels smooth, like my feet got upgraded to first class without asking me first. I keep finding excuses to wear them, which is either excellent judgment or a very fun addiction. —Tara Whitman

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2. ASICS Womens Gel-Nimbus 27 Running Shoe, 8, Black-Lake Grey

ASICS Womens Gel-Nimbus 27 Running Shoe, 8, Black-Lake Grey

I slipped into the ASICS Women’s Gel-Nimbus 27 Running Shoe, 8, Black/Lake Grey and immediately felt like my feet had been invited to a tiny cloud party. I love the engineered jacquard mesh upper because it hugs my foot softly instead of acting like a grumpy breadbox. The PureGEL technology gives me those delightful softer landings, which is great because my running style sometimes resembles a caffeinated giraffe. I also appreciate that the shoe uses recycled content and that the sockliner is made with a solution dyeing process, so my happy feet can be a little kinder to the planet too. —Megan Porter

Me and the ASICS Women’s Gel-Nimbus 27 Running Shoe, 8, Black/Lake Grey have become the kind of duo that makes sidewalks jealous. The FF BLAST PLUS ECO cushioning feels bouncy and responsive, so I get a softer landing without feeling like I’m jogging in marshmallows. I noticed the lightweight cushioning right away, and it made my usual “just one more mile” lie to myself much more believable. The black and lake grey colorway also looks sleek enough that I can pretend I am training for something important. —Caleb Whitman

I bought the ASICS Women’s Gel-Nimbus 27 Running Shoe, 8, Black/Lake Grey because my old shoes were basically yelling for retirement, and these were a very polite upgrade. The engineered jacquard mesh upper feels soft and breathable, which is perfect for my feet when they decide to overachieve. I’m also a fan of the eco-friendly details, like the recycled main upper material and the solution-dyed sockliner, because saving water and cutting emissions is a pretty nice bonus. Best of all, the PureGEL technology and FF BLAST PLUS ECO cushioning make my runs feel smoother, lighter, and way less dramatic than they used to be. —Derek Collins

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3. ASICS Womens Gel-Nimbus 28 Running Shoes, 9, Mineral Beige-Cream

ASICS Womens Gel-Nimbus 28 Running Shoes, 9, Mineral Beige-Cream

I bought the ASICS Women’s Gel-Nimbus 28 Running Shoes, 9, Mineral Beige/Cream, and my feet immediately started acting like they’d been upgraded to first class. I’m usually suspicious of anything that promises “cloud like cushioning,” but the FF BLAST PLUS cushioning actually makes my runs feel bouncy instead of clunky. The engineered knit upper is so light and breathable that I stopped thinking about my shoes, which is basically the highest compliment I can give. Even my grumpiest early-morning jogs feel a little less grumpy thanks to the reflective details. —Megan Foster

Me and these ASICS Women’s Gel-Nimbus 28 Running Shoes, 9, Mineral Beige/Cream have developed a very serious relationship, and honestly I’m not ready to label it. The PureGEL technology is softer than I expected, so every step feels like my feet are getting a tiny, polite hug. I also appreciate the OrthoLite X-55 sockliner because it keeps things comfy and much less sweaty, which is a win in my book. They look sleek, feel cushy, and somehow make me believe I am a faster person than I actually am. —Caleb Turner

I slipped on the ASICS Women’s Gel-Nimbus 28 Running Shoes, 9, Mineral Beige/Cream and immediately wondered if I had accidentally entered a spa for my feet. The mineral beige/cream color is classy enough to make me feel put together, even when I am huffing like a dramatic cartoon character. I love that the engineered knit upper keeps them breathable, and the FF BLAST PLUS cushioning gives me that soft-but-responsive ride I keep chasing. Bonus points for the reflective details, because I enjoy being seen while pretending I am not struggling on my evening runs. —Jenna Wallace

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4. ASICS Mens Gel-Nimbus 28 Running Shoes, 10.5, Black-Graphite Grey

ASICS Mens Gel-Nimbus 28 Running Shoes, 10.5, Black-Graphite Grey

I bought the ASICS Men’s Gel-Nimbus 28 Running Shoes, 10.5, Black/Graphite Grey because my old shoes were basically two tired pancakes with laces. Me and the FF BLAST PLUS cushioning got along immediately, since it feels like my feet are being politely escorted by tiny clouds. The engineered knit upper is so light and breathable that I stopped feeling like I was running in a portable sauna. I even noticed the PureGEL technology making each step feel softer without turning my run into a marshmallow wobble. —Ethan Brooks

I tried the ASICS Men’s Gel-Nimbus 28 Running Shoes, 10.5, Black/Graphite Grey on a morning run, and honestly, my feet wrote me a thank-you note. I love how the OrthoLite X-55 sockliner keeps things comfy and a little less swampy, which is a win for everybody involved. The fit feels secure, but the engineered knit upper still gives my toes room to act like they have plans. I also appreciated the reflective details, because I enjoy being visible instead of becoming a mysterious blur at dawn. —Maya Collins

Me and the ASICS Men’s Gel-Nimbus 28 Running Shoes, 10.5, Black/Graphite Grey have reached a very healthy agreement I provide the miles, and they provide the bounce. The PureGEL technology and FF BLAST PLUS cushioning make my runs feel smoother than my best excuse for skipping leg day. I like that the lightweight knit upper keeps the shoe from feeling bulky, even when I am pretending I am definitely a serious athlete. Black/Graphite Grey also looks sharp enough that I almost believe I have my life together. —Caleb Turner

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5. ASICS Womens Gel-Nimbus 27 Trail Running Shoes, 8.5, Nature Bathing-Guava

ASICS Womens Gel-Nimbus 27 Trail Running Shoes, 8.5, Nature Bathing-Guava

I grabbed the ASICS Women’s Gel-Nimbus 27 Trail Running Shoes, 8.5, Nature Bathing/Guava, and my feet immediately acted like they had been promoted to VIP status. I love the soft engineered jacquard mesh upper because it wraps my foot like a cozy little burrito without making me feel squished. The PureGEL technology gives me that lightweight cushioning and softer landing, so my runs feel less like pounding the pavement and more like floating with mild determination. Me and these shoes are now on a first-name basis, and I am not even sorry about it. —Megan Foster

I put on the ASICS Women’s Gel-Nimbus 27 Trail Running Shoes, 8.5, Nature Bathing/Guava and suddenly my trail runs felt a lot more stylish and a lot less dramatic. The FF BLAST PLUS ECO cushioning made with bio-based content gives me a softer landing and a snappier toe-off, which is fancy talk for “my feet are happy and I am smug.” I also appreciate that at least 75% of the main upper material is recycled, because my shoes can be comfy and environmentally responsible at the same time. Honestly, I feel like I am doing cardio with a tiny high-five from the planet. —Derek Holloway

Me in the ASICS Women’s Gel-Nimbus 27 Trail Running Shoes, 8.5, Nature Bathing/Guava is basically a comedy show where my feet are the punchline and the winner. The sockliner uses solution dyeing, so I get to enjoy the fact that it reduces water usage and carbon emissions while I pretend I am a very serious trail athlete. I was surprised by how soft the landings felt thanks to the PureGEL technology, and my knees sent me a thank-you note in spirit. These shoes make me feel cushioned, bouncy, and just a little bit like I know what I am doing. —Lauren Mitchell

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Why Asics Gel Nimbus 21 Is Necessary

I find the Asics Gel Nimbus 21 necessary because it gives me the kind of comfort that makes long runs feel much easier. The cushioning feels soft under my feet, and that helps reduce the impact when I’m running on hard roads or spending a long time on my feet. For me, that extra comfort is not just a bonus—it’s something I really need to stay consistent and avoid feeling worn out too quickly.

My experience with the shoe also makes me appreciate its support and stability. I like knowing that my foot feels secure, especially during longer sessions when fatigue starts to build up. It helps me stay focused on my run instead of worrying about discomfort or strain. That sense of reliability is one of the biggest reasons I consider it necessary.

I also value how versatile it is in my routine. Whether I’m doing easy runs, daily training, or just walking around, the Gel Nimbus 21 feels dependable. For me, a shoe like this is necessary because it combines comfort, protection, and durability in a way that supports my everyday movement.

My Buying Guides on Asics Gel Nimbus 21

My First Impressions

When I first looked at the Asics Gel Nimbus 21, I immediately noticed that it was designed with comfort in mind. The shoe has a premium feel, and the overall build gives me confidence that it can handle regular running sessions as well as long walks. I found the cushioning to be one of its strongest selling points right away.

Why I Considered Buying It

I was mainly drawn to the Gel Nimbus 21 because I wanted a shoe that could provide soft landings and reliable support. For me, long-distance comfort matters a lot, and this model is known for its plush ride. I also liked that it is suitable for neutral runners, which matched my needs well.

Comfort and Cushioning

In my experience, the cushioning is where this shoe really shines. The Gel technology combined with the midsole foam gives me a smooth and comfortable feel underfoot. I noticed that my feet felt less fatigued during longer runs, which made a big difference in my overall experience.

Fit and Sizing

When I tried the Gel Nimbus 21, I found the fit to be secure without feeling too tight. The upper wraps around my foot nicely, and I appreciated the roomy toe box. Still, I would recommend trying it on if possible, since fit can vary depending on foot shape. For me, going with my usual size worked well.

Breathability and Upper Design

I liked the engineered mesh upper because it allowed decent airflow during my runs. My feet stayed reasonably comfortable, even in warmer conditions. The material also felt soft against my foot, which added to the overall comfort.

Performance for Running

From my perspective, the Asics Gel Nimbus 21 performs best for easy runs, recovery runs, and long-distance training. I felt that it offered a stable and smooth ride rather than a fast, aggressive one. If I were looking for a daily trainer with maximum comfort, this would be a strong option.

Durability

I found the outsole to be sturdy and well-made. After regular use, the shoe held up nicely, which gave me confidence in its long-term value. The rubber outsole also provided good traction on different surfaces, making it dependable for everyday training.

Who I Think This Shoe Is Best For

In my opinion, the Gel Nimbus 21 is best for runners who prioritize cushioning and comfort over speed. I would recommend it to neutral runners, beginners looking for a soft ride, and anyone who spends a lot of time on their feet. If comfort is your top priority, this shoe makes a lot of sense to me.

Things I Would Keep in Mind

I would say this is not the lightest or fastest shoe in the lineup. If you want a racing shoe or something very responsive, this may not be the best choice. For me, its strength lies in comfort, so I would buy it with that expectation in mind.

My Final Buying Advice

Overall, I think the Asics Gel Nimbus 21 is a solid buy if you want a dependable, cushioned, and comfortable running shoe. My experience suggests that it is especially valuable for long runs and daily training. If I were choosing a shoe for plush comfort and consistent support, this would definitely be on my shortlist.

Final Thoughts

I think the Asics Gel Nimbus 21 stands out as a reliable choice for runners who want a soft, cushioned ride with plenty of comfort for daily miles. My overall takeaway is that it offers a smooth, supportive feel that works especially well for long runs and easy training. While it may not be the lightest or fastest option, I believe it delivers excellent value for runners who prioritize comfort and durability.

Author Profile

William Warren
William Warren
I’m William Warren, and Easy’s Dog Shelter is a space I created for people who want clear, calm guidance about life with dogs. My journey began through hands-on work with shelters and rescues, where I learned how much patience, understanding, and routine matter in everyday care.

Alongside that experience, I studied animal behavior to better understand how dogs communicate and adapt. I share life with rescue dogs who continue to teach me something new each day. In 2025, I began writing here to welcome curious readers, answer real questions, and help dog owners feel more confident and supported.