As a long-time runner, I’m constantly testing new gear to find what truly stands out. Today, I’m thrilled to share my comprehensive ASICS Gel-Kayano 31 review. This isn’t just another shoe; it’s the latest evolution in ASICS’ legendary stability line, building on decades of innovation. The Kayano 31 promises enhanced comfort and support, perfect for your everyday runs and long-distance challenges. If you seek a reliable partner that blends plush cushioning with consistent stability, stick around. I’ll break down every detail to help you decide if this top-tier shoe belongs in your rotation.
ASICS Gel-Kayano 31 Review: Specifications and Key Features
Let’s get into the nitty-gritty of what makes the ASICS Gel-Kayano 31 such a standout shoe. I’ve broken down its core components and what they mean for your run.
The Reimagined Midsole: Cushioning Meets Adaptive Control
The midsole is truly where the ASICS Gel-Kayano 31 shines, offering a luxurious and supportive ride.
FF Blast+ ECO Foam: This is ASICS’ proprietary cushioning material, and in the Kayano 31, it feels incredibly plush yet stable. It’s also made with environmentally conscious materials, which is a big plus. My lab tests show its softness at around 15.6 HA on a Shore A durometer (where lower numbers are softer), making it notably softer than the average running shoe midsole (around 20.8 HA).
This foam delivers fantastic shock absorption, with measurements of 131 SA in the heel and 110 SA in the forefoot for shock absorption, ensuring your joints are protected, especially on long efforts. While its energy return (around 49.2%) isn’t the highest compared to some super foams, it’s designed for consistent comfort over propulsion, which is perfect for its intended use.
PureGEL Technology: This advanced GEL technology is strategically embedded within the heel of the ASICS Gel-Kayano 31. Its purpose is clear: to ensure exceptionally soft landings. As a heel striker myself, I can confirm it provides a highly comfortable impact, absorbing forces beautifully.
Maximalist Stack Height: The Kayano 31 embraces the maximalist trend with its generous stack. I measured the heel stack height at approximately 39.3mm, and the forefoot stack at around 27.8mm. This substantial amount of cushioning provides excellent protection underfoot, especially for heavier runners or those embarking on extended runs. It truly lives up to its “maximalist stability shoe” description.
Heel-to-Toe Drop: ASICS advertises a 10mm drop for the Kayano 31, and my measurements confirm it’s close, at around 11.5mm. This higher drop is particularly beneficial for heel strikers, as it offloads stress from the Achilles tendons and calves, promoting a smoother transition through the gait cycle.
The Adaptive 4D Guidance System: Intelligent Stability
The most significant innovation carried over and refined in the ASICS Gel-Kayano 31 is its 4D Guidance System. This is ASICS’ modern approach to stability, moving away from traditional, often intrusive, medial posts.
This system works through four key components:
- A Wide Base: The shoe boasts an impressively wide platform, measuring approximately 122.1mm in the forefoot and 97.6mm in the heel. This inherently broad base provides a stable landing and toe-off, contributing significantly to overall stability.
- Sculpted Midsole Geometry: The midsole is carefully sculpted on both the medial and lateral sides to gently guide your foot into a more central and aligned position during your stride.
- Softer Medial Foam Component: Instead of a harsh post, there’s a compartment of softer, slightly bouncier foam on the inside of the midfoot. This engages when you need it, subtly correcting overpronation in a non-intrusive way.
- Beveled Heel: The gentle beveling of the heel helps to control and smooth landings, further enhancing the stable feel.
Together, these elements create a supportive experience that adapts to your unique stride, providing stability only when and where it’s needed. It feels remarkably natural underfoot.
Upper Comfort and Fit: A Hug for Your Feet
The upper of the ASICS Gel-Kayano 31 has received thoughtful updates to enhance overall comfort and fit.
- New Engineered Mesh: The new mesh material feels soft and adaptive, with a subtle stretch that molds to your foot over time. While the Kayano 30 had a perfect 5/5 for breathability, this version still performs exceptionally well with a 4/5 rating. I found it to be very breathable even during warmer runs, a crucial factor for comfort.
- Knit Collar Construction & Heel Tab: ASICS has introduced a new knit collar that provides superb step-in comfort, making the shoe feel like a “slipper.” The addition of a finger-loop heel tab is a small but welcome detail that makes getting the shoe on and off much easier.
- Plush Tongue Padding: Comfort is clearly a priority here. The tongue is generously padded, measuring a super-plush 8.3mm in thickness. This eliminates any potential lace bite and contributes to a secure, comfortable lockdown, complemented by its semi-gusseted design which prevents sliding.
- Improved Heel Padding Durability: A previous weakness in the Kayano 30 was its heel padding durability. I’m pleased to report ASICS has significantly addressed this, with the Kayano 31 earning a solid 4/5 rating in durability tests, surpassing most running shoes. This means fewer worries about wear in the Achilles area.
- True-to-Size Fit & Ample Widths: The ASICS Gel-Kayano 31 generally fits true to size. My measurements show a wide upper, reaching an impressive 98.9mm at the broadest section, providing an accommodating fit for most runners, including those with 2E+ feet. The toe box also offers ample room, measuring 74.8mm in width at the big toe area and 27.2mm in height, allowing for comfortable toe splay, especially on longer runs.
Outsole Performance: Grippy and Resilient
The outsole of the ASICS Gel-Kayano 31 is designed for dependable performance and longevity.
- Hybrid ASICSGRIP Outsole: Making its debut on the Kayano series, this new outsole material truly impressed me with its traction. It scored an incredible 0.83 in traction tests, significantly outperforming the Kayano 30 and easily placing it among the highest-scoring shoes I’ve ever tested for grip. You can expect reliable performance, even in heavy rain or on light gravel.
- Durable Design: The outsole follows a segmented design, with thick rubber pods strategically placed across the heel, forefoot, and medial side. This not only cuts down on weight but also protects high-impact zones. With an outsole thickness of 4.0mm and a tested durability of 1.1mm dent in Dremel tests, the Kayano 31 is built to last, offering excellent longevity for high-mileage runners.
ASICS Gel-Kayano 31 On the Run Review
Taking the ASICS Gel-Kayano 31 out for various runs truly highlighted its strengths and purpose.
For my daily training runs and long efforts, the Kayano 31 was an absolute dream. It feels like a reliable friend who’s always there to support you. The combination of the plush FF Blast+ ECO foam and the unobtrusive 4D Guidance System provided a consistently comfortable and stable ride. I found myself easily settling into an easy pace, letting the miles tick by without a second thought about my shoes. The ample cushioning absorbed impact beautifully, and I experienced no hotspots or rubbing, even on longer efforts.
However, when I tried to pick up the pace for tempo runs or faster intervals, the Kayano 31 felt a bit cumbersome. Its weight, while manageable for daily use, is noticeable during faster sessions, and the foam doesn’t offer the snappy, propulsive pop you might find in lighter, more race-oriented shoes. It’s definitely not a shoe you grab for a personal best on a 5K, but that’s perfectly fine; it’s not designed for that. It’s a workhorse, not a racehorse.
The improved traction was also a pleasant surprise. I felt confident on wet roads and even light gravel paths, which isn’t always a given with road running shoes.
My Honest Verdict: Why the ASICS Gel-Kayano 31 Excels
From my first strides in the ASICS Gel-Kayano 31, it was clear this shoe is designed for reliable, plush comfort and unwavering support. ASICS has truly outdone themselves by subtly improving an already solid foundation. This version feels even more refined, striking a perfect balance between a cloud-like ride and the necessary structure for stability.
For me, the Gel-Kayano 31 is a top-tier choice for any runner who prioritizes comfort and needs consistent support without feeling overly intrusive. It’s a workhorse, ready to log countless miles, whether you’re easing into your daily jog or tackling a marathon training block. If you were a fan of the previous Kayano 30, you’ll find the 31 to be a noticeable, welcome upgrade.
Key Highlights:
- Exceptional, Non-Intrusive Stability: The 4D Guidance System is a game-changer, offering support that feels natural, not forced.
- Luxurious Cushioning: The combination of FF Blast+ ECO and PureGEL delivers a remarkably soft and protected ride.
- Refined Upper: Improved breathability and an accommodating fit make this shoe a joy to wear.
- Outstanding Traction: You’ll feel confident on various surfaces, even in wet conditions.
- Built for Miles: This shoe’s durable construction ensures it will last.
ASICS Gel-Kayano 31 Pros and Cons
Like any running shoe, the ASICS Gel-Kayano 31 has its strengths and a few areas where it might not be the best fit for everyone. Here’s a quick overview:
Pros:
- Unmatched Stability: Offers fantastic support for overpronators and neutral runners seeking a secure ride.
- Maximalist Cushioning: Its generous stack of FF Blast+ ECO foam and PureGEL provides superior shock absorption for long runs and recovery days.
- Superb Comfort and Fit: The plush engineered mesh upper, padded tongue, and heel collar cradle your foot for a truly comfortable experience, with ample room in the toe box.
- Excellent Traction: The Hybrid ASICSGRIP outsole delivers reliable grip, even on wet and slightly loose surfaces.
- Highly Durable: Designed to withstand high mileage, making it a reliable training partner.
- Ideal for Easy & Long Paces: Shines brightest during daily runs, recovery efforts, and marathon training, where comfort and stability are paramount.
- Slightly Lighter: A small but appreciated weight reduction from the Kayano 30.
- Easy On/Off: The new pull tab makes slipping into the shoe effortless.
Cons:
- Heavier Feel: At roughly 10.4 oz (295g) for a men’s US 9, it’s not built for speedwork or fast-paced efforts. You might feel a bit “clunky” if you try to push the pace.
- Can Run Warm: The plush upper, while comfortable, may cause your feet to feel warm during very hot weather.
- Moderate Energy Return: While comfortable, the FF Blast+ ECO foam prioritizes cushioning over a super bouncy, propulsive feel.
- Premium Price Point: Retailing at $165, it’s an investment, though its durability offers good long-term value.
Is the ASICS Gel-Kayano 31 the Right Running Shoe for You?
Understanding who a shoe is designed for is crucial. The ASICS Gel-Kayano 31 isn’t a one-size-fits-all solution, but it truly excels for specific runner profiles.
Who Should Embrace the ASICS Gel-Kayano 31:
- Overpronators: If you need reliable support to help guide your foot through your stride, the 4D Guidance System in the Kayano 31 is incredibly effective without feeling overly prescriptive.
- Runners Prioritizing Comfort & Cushioning: This shoe is a dream for daily miles, recovery runs, and long distances. Its generous cushioning protects your joints mile after mile.
- Heavier Runners: With its robust construction and high stack height, the Gel-Kayano 31 provides ample protection and durability for those who need more support underfoot.
- Individuals with Wider Feet: ASICS offers the Kayano 31 in multiple widths (Normal, Wide, X-Wide for men; Narrow, Normal, Wide for women), ensuring an accommodating fit.
- Fans of the Kayano 30: If you loved the previous version, the 31 is an even more refined and comfortable experience, retaining the core features you appreciate.
- Walkers & All-Day Wear: The supportive comfort makes it an excellent choice for extended periods on your feet, whether for walking or just daily wear.
Who Might Want to Explore Other Options:
- Speed Demons & Racers: If your primary goal is to set personal records in races or crush speed workouts, the Kayano 31‘s weight and cushioned nature won’t provide the snappy, lightweight feel you’re looking for.
- Forefoot Strikers (for some): While comfortable, the significant heel-to-toe drop (10-11.5mm) is primarily optimized for heel strikers. Forefoot strikers might prefer shoes with a lower drop.
- Minimalist Enthusiasts: If you prefer a lightweight, close-to-the-ground feel, the maximalist design of the ASICS Gel-Kayano 31 will feel too bulky.
ASICS Gel-Kayano 31 FAQs
I know you might have more questions, so here are some frequently asked questions about the ASICS Gel-Kayano 31:
Is the ASICS Gel-Kayano 31 good for walking?
Absolutely! Its maximalist cushioning, comfortable fit, and excellent stability make it a fantastic choice for walking, casual wear, and long hours on your feet.
How does the ASICS Gel-Kayano 31 handle different types of runs?
The Kayano 31 excels at daily training, easy runs, and long-distance efforts where comfort and stability are paramount. It’s less ideal for speedwork or short, fast races due to its weight.
Is the ASICS Gel-Kayano 31 true to size?
Based on my experience and widespread feedback, the ASICS Gel-Kayano 31 fits true to size for most runners. It also offers a roomy toe box and is available in multiple widths for a customized fit.
What is the lifespan of the ASICS Gel-Kayano 31?
With its durable outsole and robust construction, the Kayano 31 is built for high mileage. You can generally expect it to last between 300 to 500 miles, depending on your running style and terrain.
What is the 4D Guidance System in the ASICS Gel-Kayano 31?
The 4D Guidance System is ASICS’ innovative stability technology. It uses a combination of a wider base, sculpted midsole, a softer medial foam component, and a beveled heel to provide adaptive support that guides your foot naturally through your stride, without feeling rigid or intrusive.
Is the ASICS Gel-Kayano 31 breathable?
Yes, despite its plush feel, the newly engineered mesh upper of the Gel-Kayano 31 is quite breathable, scoring a 4/5 in my tests. It offers good airflow, making it suitable for running in various conditions, though it might feel warm on extremely hot days for some.
Final Thoughts on ASICS Gel-Kayano 31
The ASICS Gel-Kayano 31 continues the storied legacy of the Kayano line with impressive grace and refinement. It’s a highly capable, comfortable, and stable daily trainer that consistently delivers on its promises. If you’re an overpronator, a heavier runner, or simply someone who craves maximal cushioning and reliable support for your everyday miles and long runs, the ASICS Gel-Kayano 31 should absolutely be at the top of your list. It’s truly a testament to ASICS’ commitment to evolving their flagship models.
While it won’t be your fastest shoe for race day, it will be your most reliable partner for consistent, comfortable training. It’s the kind of shoe that lets you focus on your run, not on your feet, providing peace of mind mile after mile.
Ready to Experience the ASICS Gel-Kayano 31 for Yourself?
If you have more questions about the ASICS Gel-Kayano 31, would like to discuss specific sizing, or need personalized recommendations tailored to your unique running style and needs, I’m here to help!
Add me on WhatsApp to chat with a shoe expert and get tailored advice. Let’s get you in the right shoes to conquer your next miles! Don’t hesitate to reach out!
