| Spec | Hierro 9 | Ultra Glide 3 |
|---|---|---|
| Best price now | £139.99 | £85.00 |
| 90-day low | £68.50 | £68.30 |
| 30-day average | £138.66 | £112.09 |
| RRP | £155.00 | £150.00 |
| Category | Trail | Trail |
| Surface | Trail | Trail |
| Weight | 301g | 285g |
| Drop | 4mm | 6mm |
| Heel stack | 42mm | 41mm |
| Forefoot stack | 38mm | 35mm |
| Carbon plated | No | No |
| Stability | No | No |
| Review rating | — | — |
The New Balance Hierro 9 is a cushioned, protective trail running shoe built for long days on mixed ground rather than chasing podiums. It sits in the max-cushion, door-to-trail camp: soft enough to soak up road sections and rocky descents, planted enough that you can switch off and enjoy the miles. At 301g with a low 4mm drop it is not light, and it is not trying to be. What you get instead is a stable, forgiving ride that keeps your legs fresher deep into a long run or ultra. Grip is confident across dirt, gravel and damp rock without the deep lugs that make aggressive mud shoes feel awkward on hardpack. If you want a faster, grippier racer for steep technical terrain the Hoka Speedgoat 7 is the sharper tool. But as a comfortable daily trail trainer that shrugs off distance, the Hierro 9 is an easy shoe to live in.
The Salomon Ultra Glide 3 is a soft, high-cushion trail running shoe built for one thing: keeping you comfortable when the miles stack up. This is not a nimble mountain racer. It is a long-day cruiser for runners who want to switch off and let the shoe soak up the ground on runnable trails, canal paths and gentle single track. At 285g with a 6mm drop, it sits in that easygoing daily-trail zone, closer in spirit to a road-to-trail shoe than a technical fell weapon. The Contagrip outsole handles dry hardpack and light mud well, though it is not built for deep bog or scrambling. We rate it as one of the more forgiving ultra-distance trail shoes going, a shoe you reach for on tired legs and back-to-back weekends. If you want protection, softness and a relaxed ride over big distances, and you are not chasing course records on gnarly ground, the Ultra Glide 3 is an easy shoe to recommend.
A side-by-side comparison makes the trade-offs between two running shoes easy to see, but the right pick still depends on how you run. Weight and stack height shape the feel underfoot: a lighter shoe with a lower stack feels nimble and fast, while a heavier, taller stack gives a softer, more protective ride for long miles. Heel-to-toe drop changes where you feel the load, with lower drops asking more of the calves and Achilles.
The price figures update from the UK retailers we track daily. The best price now is the cheapest tracked price we can currently link to, the 90-day low shows how cheap the shoe has been recently, and the 30-day average tells you whether a price is a genuine drop or just the going rate. Coverage is partial rather than complete, so always confirm the final price and your size on the retailer site, and set a price alert on the model you want so we can email you the moment it drops.
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