Mauno Neo Zen vs ASICS Novablast 5: Which $140 Fun Daily Trainer Wins?

Introduction

Two of the hottest daily trainers and fun shoes on the market right now go head-to-head in this comparison: the Mauno Neo Zen and the ASICS Novablast 5. Both come in at $140, both are built around tall stacks of soft foam, and both promise fun daily miles. The Novablast 5 is widely considered one of the best shoes in the fun daily trainer segment, while the Neo Zen is a newer release with a lot to say in this category.

After running a 20-mile double day in the Neo Zen and putting roughly 50 miles on the Novablast 5, the differences are clear. One is a fun shoe you can use daily; the other is a daily trainer that happens to be fun.

Mauno Neo Zen: The Soft, Tall Wild Card

The Neo Zen is built on a supercritical TPU foam that is very soft and bouncy, with a smooth rocker profile. The midsole pattern is designed to symbolize the nitrogen bubbles in the foam. It is genuinely light: 256 g in a US men’s 10.5, which is surprisingly light given the stack. Measured stack height came in around 42.7 mm in the heel with just 10 miles of use, almost as tall as a Superblast.

On foot, it feels significantly higher off the ground than the Novablast 5, with a way better and smoother rocker. It is the more comfortable, more exciting, more fun shoe of the two, and it reminded many testers of a more fun New Balance 1080 or a Superblast that is softer and more comfortable.

Its best use case is faster, more fun daily miles in the 7:30-per-mile and quicker range, similar to how many people used the Saucony Endorphin Speed 3 as a daily trainer. It responded well at pace with bounce and pop, and it passed the 20-mile double day test with no bottoming out.

The trade-offs are real, though. The upper is the weakest point: the material looks cheaper than the Novablast 5’s refined performance mesh, the fit is sloppy with too much room, and the heel feels narrow and wobbly. The platform is also measurably narrower (77 mm versus 90 mm near the heel), so stability is much worse. Very soft foam plus a narrow base means heavier runners or high-force runners may find it less protective over time.

ASICS Novablast 5: The Reliable All-Rounder

The Novablast 5 is a much-improved shoe over the Novablast 4. It is lighter, bouncier, and softer than the previous generation, and it is fun again. It weighs 271 g in a US men’s 10.5, about 10 g heavier than the Neo Zen, and much of that weight comes from a more padded, more comfortable upper that feels like a true daily trainer. The fit is true to size with a slightly wider toe box, and the material feels noticeably more refined.

The wrapped foam and wider base give it clearly more stability than the Neo Zen, and the FF Blast Max foam held up well through about 50 miles of testing without bottoming out. Forefoot protection is equivalent to the Neo Zen.

There are two known flaws. Grip in wet conditions is poor enough to be distracting when running fast in the rain, and there is still a slight choppy sensation where the heel lands before the forefoot at certain paces and cadences, though it is much reduced from version 4.

Where the Novablast 5 shines is dependability. It feels like less effort at slower paces, it is the shoe you do not have to think about, and it is the kind of shoe that has very few demerits. If you want one reliable shoe for everyday running, high-mileage base building, or relaxed miles, this is the safer pick. ASICS is the Toyota of running shoe brands for a reason: value, build quality, and consistency.

Head-to-Head Verdict

• Softness and fun: Neo Zen
• Stability and security: Novablast 5
• Upper comfort and fit: Novablast 5
• Grip: Neo Zen (reported to perform better in wet conditions; Novablast 5 grip is poor)
• Reliability and versatility: Novablast 5
• Ride smoothness and rocker: Neo Zen
• Protection in the forefoot: Tie

Which One Should You Buy?

If you are in a winter aerobic base-building block, pushing your highest mileage ever, or you want one shoe you can just run in without thinking, the Novablast 5 is the better choice. It is also the pick for new runners and anyone with stability concerns, and it is the only one of the two recommended for a one-shoe rotation.

The Neo Zen is the wild card. If you are replacing a Superblast-style fun shoe in a rotation, or moving on from something like the Endorphin Speed 2 or 3 that you used as a daily trainer, it is a great fit. It is more fun, bouncier, softer, and lighter than the Novablast 5, and for $140 it does soft-bouncy fun better than shoes like the Superblast or the New Balance BOAS concept. Just plan on pairing it with something more reliable, size up your expectations for the upper, and use it at paces of roughly 7:30 per mile or faster.

Conclusion

The Novablast 5 is still the better shoe overall for most people because it has fewer issues, while the Neo Zen is the more niche, more fun product for enthusiasts who want something different in their rotation. Both are excellent at $140, and neither will disappoint if it matches the role you need it to fill.