New Balance Fresh Foam X Hierro v9 gore Tex

New Balance Fresh Foam X Hierro v9 gore Tex review: what runners say

Fit

Fit runs true to other New Balance models, but sizing up half a size is recommended for toe room, especially on descents and long distances. Sources also note the toe box is not among the most generous.

Feel

Dual density Fresh Foam X: softer top layer, firmer bottom layer for ground stability. Generous, protective cushioning without excessive sink; the overall sensation is balanced rather than plush.

Durability

Runrepeat cites durability as an explicit strong point. The Vibram Megagrip outsole is built to last; the central outsole zone features a rubber cutout with exposed foam that some reviewers flag as a potential wear point to monitor.

Best for

Trail running on mixed dry/muddy terrain, long runs, and daily training on forest and park routes. Suited to comfort-oriented ultratrails and active travel. Not recommended for steep technical terrain, fell running, or faster paces.

Weak points

Narrow fit in the toe box, especially on descents. Heavy for the trail category. Some sources report reduced flexibility compared to previous versions.

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