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Buyer's Guide

ASICS Superblast Review & Sizing Guide

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Buy the ASICS Superblast 3 for a softer, more comfortable daily-long super trainer with proven 400-600 mile durability across owners; skip if you want a snappy threshold specialist and prefer the firmer SB2 ride I wouldn't be doing many threshold or tempo work in these. I actually feel like these make just a great daily running shoe now.

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Key facts

Foam
FF Turbo Plus / FF Leap super-trainer foam; no plate; high stack.
Generation pick
SB3 is softer and more daily-friendly; SB2 is firmer and more efficient at threshold.
Fit
Toe box wider on SB3 than SB2; length runs the same as other ASICS.
Durability
Owners regularly report 400-600 miles before foam goes dead; outstanding for a super trainer.
Use case
Easy-to-tempo daily training and long runs; tempo work is paces-dependent.
Caveat
SB3 is slappier and louder than the firmer SB2; the SB3 is not the same shoe at all.

Full breakdown

ASICS Superblast is the brand's plateless super trainer line built on FF Turbo Plus / FF Leap foam with a high stack and a slappy, dense ride that thrives at tempo and long-run paces. The Superblast 3 deliberately moved the line softer than the SB2, with a wider toe box and the same length, so the SB2's firm tempo specialist becomes more of an easy-mileage daily these feel softer on step in, like significantly softer. It almost doesn't feel like the same shoe as the 2. Buy the SB3 at retail for a 400+ mile daily-long shoe; skip it if you specifically want the SB2's firmer, more efficient tempo feel.

FAQ

Should I buy the Superblast 2 or Superblast 3?

Buy the Superblast 3 if you want a softer daily-long trainer that handles 4-12 mile runs at easy pace; choose the SB2 if you want a firmer, more efficient ride at tempo. The 134-comment SB3 review is explicit that the foam is significantly softer on step-in and the geometry has been retuned for easier paces they don't feel as stiff as the 2. They are significantly softer running in than the 2. Wide-foot runners should also lean SB3 because the toe box is wider; SB2 owners who liked the slappy threshold feel should wait or hunt the SB2 on clearance.

How does the Superblast compare to the Megablast?

Superblast is lighter, slappier, and better at tempo; the Megablast is heavier, more cushioned, and built for long-day comfort. The SB3 review thread explicitly says ASICS deliberately softened the SB3 to differentiate it from the heavier Megablast in the lineup I do feel like asics really geared this to the easy side to make the mega blast not a redundant shoe. Choose Superblast if you want a single-shoe trainer that doubles for fast tempo days; choose Megablast if you want max comfort for marathon training and accept the price ($225 vs $200).

How long does the Superblast last?

Plan on 400-500 miles minimum, with multiple owners reporting 600+ miles before the foam dies. The SB3 review thread is dense with longevity discussion: owners regularly take Megablast to 600 miles and SB2 past 200 with only minor wear, which is exceptional for a high-stack super trainer Ive taken the Megablast to 600 miles so far and they still aren't dead. Buy at retail with confidence on durability; the foam compound and outsole layout are the line's strongest argument for the $200 price tag.

Is the Superblast 3 a good daily trainer for easy miles?

Yes, the SB3 is now one of the strongest plateless daily trainers in the super-trainer category because ASICS made it more comfortable for easy-pace runners. The 134-comment review concludes the SB3 is great for daily miles and long runs but no longer a tempo specialist, which is the trade-off to weigh before you buy my initial thoughts are it's great and feels fantastic on foot. Much better than the 2. I will be using this for daily miles and long runs. Choose the SB3 if you want a single-shoe rotation for easy-and-tempo daily runs; pair it with a plated racer like the Saucony Endorphin Pro if you also need race-day snap.

Is the Superblast worth the $200 retail?

Yes at retail for runners logging 30+ miles per week, because the per-mile cost is unusually low given the 400-500 mile lifespan. The 92-comment 100km review thread (titled "Softer, More Fun, Less Efficient") agrees the SB3 is the more comfortable shoe but warns that the slappier ride costs some efficiency at faster paces ASICS Superblast 3 - 100km Review (Softer, More Fun, Less Efficient). Wait for sale only if your weekly miles are under 20; the SB3's first-quarter retail discipline is tight and discount windows are short.