Welcome to Trail Shoes Reviewed. Today we’re taking a look at the New Balance Fresh Foam X Hierro v9, a well-cushioned trail shoe that’s received some important updates from the v8 — particularly in the midsole, outsole, and overall fit.
If you’re after a comfortable, stable, and reliable trail shoe that transitions well between road and trail, this might be a solid pick. Let’s break down what’s new and how it performs underfoot.
Outsole: Upgraded Grip for Muddier Conditions
One of the biggest changes in the Hierro v9 is the Vibram Megagrip outsole, now with 4.5mm multi-directional lugs.
- In past versions, the Hierro was best for road-to-easy-trail use, but now you’ll get better grip on wet, muddy terrain like forest trails and grass fields.
- While it still doesn’t match the aggressive traction found in something like the Hoka Speedgoat 6 or the Topo MTN Racer 3, it’s definitely a step up in terms of versatility.
Midsole: Dual-Density Fresh Foam X for Balanced Cushioning
This model features a Fresh Foam X dual-density midsole, offering a soft feel on initial contact but a slightly firmer ride than you might get from a pure road shoe like the 1080.
- Stack Height: 33mm rearfoot | 29mm forefoot
- Drop: 4mm
The lower drop promotes even force distribution across the foot, which is great for most runners. However, if you struggle with Achilles issues, a higher-drop shoe might be more suitable.
Check the latest price on Amazon:
Stability Features: Sidewalls and Sole Flare
New Balance has done a nice job adding functional stability into this higher-stack model:
- Raised sidewalls around the heel and forefoot help keep your foot centred.
- Mild sole flare in the forefoot increases contact with the ground, adding to that stable underfoot feel—something you don’t always get with max-cushioned trail shoes.
For a similar approach to stability in a higher-stack shoe, see our thoughts on the Brooks Caldera 7.
Upper and Fit: Classic New Balance Comfort with Minor Tweaks
The upper is what you’d expect from New Balance: well-built, comfortable, and trail-ready.
- Toe guard: Offers mild protection—fine for roots and debris, but not rock kicks.
- Fit: True to size, though the toe box is slightly shallow. If you’re in between sizes, consider going up half a size.
- Widths: Available in wide, though we found the standard fit had plenty of space in the forefoot.
- Tongue and heel: Gusseted tongue keeps out debris, and the padded heel counter feels secure without being rigid.
- Weight: Approx. 297g (US Men’s Size 9)
Overall, the shoe provides a locked-in midfoot with plenty of toe room, making it suitable for longer miles.
Best Use Cases: Where the Hierro v9 Shines
We’d recommend the Hierro v9 for the following:
✔ Road-to-trail runs
✔ Mild to moderate off-road terrain
✔ Recovery runs or long, easy miles
✔ Forest trails, gravel paths, and grass fields
Due to its weight and moderate lug depth, it’s not ideal for steep or highly technical terrain. For that, you’d want a shoe like the Inov-8 Trailfly or Topo MTN Racer 3.
Check the latest price on Amazon:
Final Thoughts
The New Balance Hierro v9 is a well-cushioned, stable, and comfort-focused trail shoe that’s a great option for runners logging easy miles or looking for a versatile road-to-trail transition shoe. With improved grip, a stable platform, and plenty of room through the forefoot, it’s an excellent update from the v8 and fits right into the max-cushioned trail shoe category.
If you’re looking for a shoe to carry you comfortably over mixed terrain without compromising on support or cushioning, the Hierro v9 is worth considering.