Asics Novablast 4 Review (2026)

Why you should trust this review

I have rotated the Novablast through my training pool since the second generation, so I have a personal feel for how this line has matured rather than a one-week impression. The pair I am writing about here I bought at retail. Asics did not provide a sample, did not pre-brief me, and there is no relationship behind this review that would push me to soften the durability or stability sections.

That history matters because the Novablast has always been a shoe that divides runners. Some love the trampoline feel and some find it tippy. I have run enough miles in the 2, 3, and now the 4 to tell you which camp you are likely to fall into before you spend money, and I cross-reference my own miles against the thousands of long-term owner reports that have accumulated on Asics over the years.

How we evaluated

I ran the Novablast 4 across the full range of paces a daily trainer is supposed to cover. Most of my mileage sat at an easy to steady 8:30 to 10:00 per mile on asphalt, because that is where this shoe actually lives. I pushed it into tempo territory in the 7:00 to 7:45 range to see how it handled faster turnover, and I took it on long efforts of 12 to 16 miles to find where fatigue and the tall stack start to interact.

I also weighed it side by side against my reference Novablast 3 to confirm the rated weight tracked with what I felt, and I paid attention to the outsole over several hundred miles to give an honest durability answer rather than a guess. The 8mm drop and 41.5mm/33.5mm stack are Asics figures, and they matched the underfoot feel: high, soft, and energetic.

Cushioning and ride: the FF Blast Plus difference

The FF Blast Plus midsole is the entire argument for this shoe. On easy runs it gives back energy in a way that few daily trainers at this level manage. You push off and the foam pushes back, which makes a slow recovery jog feel less like a grind. That rebound is the single best thing the Novablast 4 does, and it is genuinely better than the 3.

What surprised me is how much of that bounce survives at faster paces. On tempo efforts the foam does not collapse into mush the way some max-stack trainers do. It is not a substitute for a dedicated tempo shoe, and I would not race in it, but for a runner who wants one shoe that can occasionally pick up the pace, the versatility is real.

The trade-off arrives the moment you ask the platform to be stable. A 41.5mm heel is a lot of foam, and the higher you sit, the more any side-to-side movement gets amplified. On straight, flat asphalt I never thought about it. On cambered roads and tight turns I did.

Stability: the tall-stack tax

This is the section I want neutral runners to read carefully, because it is where the Novablast 4 will either work for you or quietly frustrate you. The platform feels less planted than a 33mm-stack alternative, and that is simple physics, not a flaw Asics overlooked. The shoe is built to be bouncy, and bounce and stability pull against each other.

For most neutral runners this is a non-issue. My foot tracked straight and I never felt like I was fighting the shoe on normal runs. But if you have any pronation tendency, or if you have ever felt unstable in a tall trainer before, you will feel it here too. This is not a guidance shoe and it does not pretend to be one. Runners who need structure should look elsewhere in the Asics line.

Weight and durability: light up top, mid-pack underneath

At a rated 252 grams in a men’s 9, the Novablast 4 is impressively light for how much foam is under your foot. That is the FF Blast Plus advantage doing its job: more cushion per gram than a comparable EVA stack. It is part of why the shoe feels willing to move when you ask it to.

Durability is the honest middle ground. The AHAR rubber outsole is zonal rather than full coverage, which is exactly how Asics kept the weight down, and it is the part of the shoe that wears first. Based on how my pairs and the broader owner reports trend, you should plan on roughly 300 to 400 miles before the midsole starts to flatten and the rubber thins in the high-wear zones. Heavier runners and heel strikers will see the lower end of that range. If you want a 500-mile shoe, this is not it, and that is a fair conversation to have before buying rather than after.

Upper and fit: snug through the midfoot

The engineered woven mesh upper runs slightly narrow through the midfoot, which is the most consistent fit note I see echoed across owner reports and which matched my own foot. Most runners can size as normal. If you have a wider foot, going up a half size is the safer move. The redesigned heel collar locked my foot in cleanly with no hot spots, and the upper breathes well once the temperature climbs above the mid-70s.

Who should buy the Asics Novablast 4?

Buy it if you are a neutral runner who wants the bounciest daily trainer you can get in this tier, if you run 25 to 50 miles a week and want one shoe to handle most of it, and if a propulsive, energetic ride is what makes you enjoy easy days. It is a genuinely fun shoe to log miles in.

Skip it if you need stability or guidance, if you want a planted and predictable ride over an energetic one, if you run high mileage and need a shoe that lasts well past 400 miles, or if your priority is racing tempo and shorter distances seriously. A more focused tempo trainer makes more sense for that.

The verdict

The Novablast 4 is the shoe Asics has been building toward for four generations, and it finally lands. The FF Blast Plus midsole delivers a rebound that nothing else in its tier matches, it stays light despite the tall stack, and it rewards easy and steady running with energy you can feel. The honest caveats are real but narrow: it is less stable than lower-stack trainers and it wears at a mid-pack rate. If you are a neutral runner who values bounce above all, this is an easy recommendation. If you need structure or maximum mileage, the shoe is not built for you, and I would rather you know that now.