The New Balance Fresh Foam X Hierro v9 is designed for trail runners seeking comfort and durability on less technical terrains, and because it performs admirably on road surfaces too, I'm filing it in the road-to-trail running shoe category.
With significant updates from its predecessor, this shoe aims to balance plush cushioning with reliable performance, in a durable, bomb-proof form factor.
I've been using it mostly for daily runs, on a mixture of terrains, here's how it has been performing...
Key Specifications
- Price: $155 at REI.com / Sportsshoes.com (For UK Readers)
- Weight: Approximately 11.2oz (318g) for a men's US size 9
- Drop and Stack Height: 4mm drop with a 42mm heel stack and 38mm forefoot stack
- Upper: Mesh upper with padded tongue and collar; includes overlays and a stiff toe bumper for protection
- Midsole: Dual-density Fresh Foam X; softer top layer for comfort, firmer bottom layer for stability and responsiveness
- Outsole: Vibram Megagrip rubber with 6mm lugs for versatile traction
Sizing and Fit
The Hierro v9 fits true to size in length but has a snug fit, particularly in the midfoot and toe box areas.
If you have wider feet or those preferring more room may will it slightly restrictive - in which case, go for one of their wide options, rather than sizing up.
The shoe provides some stretch in the upper and moderate vertical volume, but overall, it leans towards a narrower fit.
Performance Review
On the trails, the Hierro v9 shines brightest during long, easy runs on smoother surfaces like gravel paths and forest trails.
It's not a fast shoe but where it lacks in speed it makes up for in comfort, cushioning, protection, and durability.
The dual-density Fresh Foam X midsole delivers a balance of plush comfort and control, with the softer top layer, cushioning each step, and the firmer bottom layer providing a stable ride with added responsiveness.
The subtle rocker geometry aids in forward momentum, which I found especially noticeable during climbs.
The Vibram Megagrip outsole, equipped with aggressive 6mm lugs, offers dependable traction across various conditions, including wet rocks, and dry trails.
Although the traction can handle all mountain trails, I'm not classifying these as all mountain trail running shoes, because they're not nimble enough, weighing in at a hefty 11.2oz (318g) for a men's US size 9.
Alastair Dixon
Toe protection is robust, effectively shielding against unexpected obstacles - we've all been there toward the end of a long run, forgetting to pick up our feet, and instead stubbing our toes on a root or rock.
You can stub them all you like with these, and not suffer the consequences! haha.
However, the upper's breathability is limited, which will lead to warmer feet if you run in hotter conditions.
Other than all those points it actually makes a very versatile all terrain shoe that's great on road or trail but also as a lifestyle shoe if you also enjoy hiking too.
Is the New Version Better?
Well I cant speak directly to this because I missed out on testing the Hierro v8, but I've done a little research to give you a quick answer on the updates.
The Hierro v9 introduces several improvements over its predecessor, notably an increased stack height for enhanced cushioning and a redesigned outsole for better grip.
However, these enhancements come with a slight increase in weight and a snugger fit, which may not appeal to all runners - you know who you are!
My Verdict
For a price of $155, the New Balance Fresh Foam X Hierro v9 is a solid choice, if you prioritize comfort and protection on less technical trails, or those who want an extremely durable yet comfortable running shoe for mixed terrain, including occasional road runs, and hikes.
Its cushioning and traction make it suitable for long, easy runs and even hiking adventures.
You can pick up a pair for $155 at the following trusted online retailers:
$155 at REI.com / Sportsshoes.com (For UK Readers)
Not sure about these and still exploring other road-to-trail running shoes? Here are my top picks in this category:
Alastair Dixon
However, those seeking a lightweight, highly breathable shoe for technical terrains or faster paces will want to explore other options, in which case, head over to my 'Best All-Mountain Trail Running Shoes' roundup next - link below:
Alastair Dixon
