Verdict from 5 experts and 100+ user reviews

5 reasons to buy

  • Synthetic materials make up the fabric and overlay system of the upper unit.
  • Most runners appreciated the technologies that make up the upper unit of the Fresh Foam Hierro, including the SURE LACE design, the anti-debris tongue and the Ortholite anti-microbial sock liner.
  • The Fresh Foam system offers a plush underfoot platform that supports the foot all throughout the gait cycle.
  • A handful of runners welcomed the AT Tread Outsole, which is a trail-specific outer unit made to improve the durability of the shoe, as well as the traction that it gives.
  • Aggressive gripping lugs help the runner hold onto the various types of surfaces found on the trails.

3 reasons not to buy

  • The Fresh Foam Hierro has a mildly high price.
  • Some reviewers felt that it was a bit narrow along the forefoot area.
  • The men’s version is noticeably heavier than the women’s.

Bottom line

The Fresh Foam Hierro from New Balance is a great-looking trail shoe that offers aggressive components that would effectively act against the harsh nature of the trails. It offers mild underfoot support while also providing a comfortable experience for everyday training.

Tip: see the best trail running shoes.

Good to know

  • The New Balance Fresh Foam Hierro features the brand’s Fresh Foam midsole that takes shoe cushioning to the next level. Created from one-piece midsole foam, this shoe delivers enough amount of cushioning and soft underfoot feel.
  • Another new feature of this New Balance shoe is the AT Tread Outsole. It is a reliable outsole, engineered to deliver durable traction on varied surface. This shoe is ready to take runners on varied terrains.

The Fresh Foam Hierro is available in standard shoe length. It gives snug fit on the heel, midfoot and forefoot. This shoe is not only available in standard widths but also in wide and extra wide.

The AT Tread Outsole is a trail-specific outsole engineered to deliver durable traction on different surfaces. It works hand-in-hand with the multi-directional aggressive lugs that keeps runners upright on uphill and downhill running.

The Fresh Foam Hierro uses the innovative Fresh Foam midsole of New Balance. The single piece midsole foam delivers durable cushioning for a soft underfoot feel. This midsole material is also available in the New Balance Hierro v4.

The synthetic mesh covers of the New Balance Fresh Foam Hierro gives lightweight breathability and the synthetic overlays wrap the foot securely, giving a comfortable fit. The gusset tongue does not only give added comfort but also prevent debris from entering the shoe. This shoe features the brand’s Sure Lace system, allowing laces to stay tied and prevents lace loosening.


How New Balance Fresh Foam Hierro ranks compared to all other shoes
Top 38% trail running shoes
All trail running shoes
Top 41% New Balance running shoes
All New Balance running shoes
Top 38% neutral running shoes
All neutral running shoes


The current trend of New Balance Fresh Foam Hierro.
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Jens Jakob Andersen
Jens Jakob Andersen

Jens Jakob is a fan of short distances with a 5K PR at 15:58 minutes. Based on 35 million race results, he's among the fastest 0.2% runners. Jens Jakob previously owned a running store, when he was also a competitive runner. His work is regularly featured in The New York Times, Washington Post, BBC and the likes as well as peer-reviewed journals. Finally, he has been a guest on +30 podcasts on running.