The Verdict Upfront (TL;DR): The ASICS Megablast is a top-tier training partner, but it’s not here to coddle you. It’s an unplated rocket ship that rewards aggressive running, delivering a truly fast and energetic ride. If you’re looking for a softer daily shoe, keep walking. If you want a firm, responsive speedster for uptempo work—and your feet aren’t wide—this shoe is absolutely sensational. Just brace yourself for the $225 price tag.
👟 First Impressions: Wait, What is This Thing?
When you first lace up the Megablast, you might be a little confused. ASICS has been dropping new models left and right lately, and this shoe, weighing in at a light 7.8 ounces (221g), is their new premium non-plated speedster.
My first easy run in them was honestly a little meh. At slow paces, the midsole felt firm—almost blocky. There was no immediate “wow” factor, no bouncy trampoline effect. It’s tall, with a massive 45mm stack height (37mm in the forefoot, 8mm drop), but it’s definitely not a soft, squishy maxi-cushion ride.
But here’s the trick: You have to put some effort in.
The second I threw in a few hill sprints, the shoe completely changed its personality. The firm foam suddenly became a source of explosive energy. It felt springy, fast, and snappy. It’s like a sports car that only reveals its true power when you press the accelerator hard. This shoe isn’t meant for sipping lattes; it’s meant for chasing PRs.
🚀 The Midsole: FF Turbo Squared – A Firm Revolution
The core technology here is ASICS’s new FF Turbo Squared—a next-generation aliphatic TPU foam. Forget everything you know about plush, soft ASICS shoes like the Gel-Nimbus. This foam is firm and rubbery, but unbelievably energetic.
If you’re a runner who loves the feeling of being propelled forward, this foam delivers. It’s been described as feeling like a “souped-up Superblast 2″—a faster, more aggressive version. This isn’t your easy day shoe; it’s your workout shoe.
The foam requires real force to compress. When you hit it with your full weight during a tempo run or a fast finish, it pushes back with incredible rebound. ASICS claims it’s 33% bouncier than their standard FF Turbo, and I have to believe it. It feels genuinely fast and snappy despite having no carbon plate. It might just be the fastest non-plated trainer I’ve ever run in.
🏃 Performance: The Need for Speed
So, where does the Megablast fit into your shoe rotation?
- Tempo Runs & Speedwork (A+): This is where the shoe shines. Its firm, snappy ride and light weight make hitting those quicker paces feel effortless.
- Long Runs with Fast Finishes (A): The high stack provides enough protection and cushioning for long miles, and you have that incredible burst of energy ready when you want to finish strong.
- Easy/Recovery Runs (C-): Skip it. The Megablast is not designed to be comfortable at slow speeds; it will feel clunky and unresponsive.
The high stack height means the shoe is technically illegal for professional World Athletics races, but for the rest of us, it’s a lightweight powerhouse that’s also incredibly durable. The outsole rubber is tough, and the foam itself resists scuffs and tears remarkably well, meaning this expensive shoe should last you a good number of hard training cycles.
⚠️ The Major Catch: The Upper & Fit
Here’s the part where the Megablast loses a couple of points: the fit is narrow.
The upper itself is a hybrid racer/trainer design—thin and plastic-like to save weight, with enough padding around the heel to lock your foot down securely. The overall lockdown is excellent; your foot is going nowhere.
However, the forefoot is noticeably, restrictively narrow. If you have wider feet, you should honestly steer clear. Runners have already mentioned feeling pressure on their pinky toe. And here’s the key piece of advice: Do not size up! The length of the shoe is true to size; going up a half size will just make the shoe too long and still won’t fix the width issue.
If you have average or narrow feet, you should be fine, but this narrow fit is a serious barrier for many.
✅ Final Verdict: Should You Buy It?
The ASICS Megablast is an impressive first-generation shoe, delivering a unique and highly engaging ride that’s a welcome break from the overly soft competition. It proves that you don’t always need a carbon plate to go fast.
| Pros (The Good Stuff) | Cons (The Caveats) |
| 🚀 Extremely Fast & Energetic (Fastest non-plated trainer out there) | 👣 Very Narrow Forefoot (A dealbreaker for wide feet) |
| 💡 Revolutionary FF Turbo Squared (High rebound foam) | 💰 Pricey ($225 MSRP makes value debatable) |
| 🛡️ Excellent Durability (Tough foam and outsole) | 🧱 Firm at Slow Paces (Not a versatile daily trainer) |
| 🔒 Secure Fit (Great lockdown for speed) |
Who is this shoe for? You are a serious runner with narrow to average feet who needs a dedicated, firm, lightweight shoe for your tempo runs, intervals, and marathon pace training.
Who should avoid this shoe? You have wide feet, or you want one shoe to comfortably handle everything from slow jogs to fast workouts.
The Megablast is a specialized, high-octane tool. It’s an investment, but if it fits your foot and your training style, it’s a game-changer.
