New Balance Fresh Foam Hierro v9

New Balance Fresh Foam Hierro v9 review: what runners say

Fit

True to size with a padded upper and secure heel; midfoot runs wide for narrow feet, with risk of forward slippage on descents.

Feel

Dual-density Fresh Foam X midsole: soft top layer, firmer base for stability. Comfortable ride with a subtle rocker; less responsive on technical terrain.

Durability

Vibram Megagrip with 4.5 mm lugs; no precise mileage data in sources, but outsole is rated solid on hard-packed dirt and mixed asphalt. Reduced performance in deep mud.

Best for

Long, non-technical trails, ultras on open courses, road recovery days. Not suited for tight singletrack or muddy terrain.

Weak points

Midfoot too roomy for narrow feet, with forward slippage reported by multiple reviewers. High weight (329 g in EU 44.5) noticeable over long distances.

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