| Spec | Hierro 9 | Fast-Trac Nitro 3 |
|---|---|---|
| Best price now | £69.99 | £33.00 |
| 90-day low | £68.85 | £56.00 |
| 30-day average | £126.48 | - |
| RRP | £155.00 | £140.00 |
| Category | Trail | Trail |
| Surface | Trail | Trail |
| Weight | 301g | 290g |
| Drop | 4mm | 8mm |
| Heel stack | 42mm | 31mm |
| Forefoot stack | 38mm | 23mm |
| 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 Puma Fast-Trac Nitro 3 is a lightweight, do-it-all trail running shoe built for runners who want one pair to cover most of what the UK throws at them. It is not an ultra cruiser and it is not a stripped-out racer. It sits in the sweet spot between the two: agile enough to feel fast on rolling singletrack, cushioned enough to hold up on a longer day out. At 290g with an 8mm drop, it is nicely balanced, and the nitrogen-infused Nitro foam gives you a lively, springy return that keeps tired legs turning over. The grippy outsole is the real story here, biting confidently into wet grass, mud and loose gravel where plenty of rivals slither. If you want a versatile, well-priced trail shoe for training, mixed terrain and the odd race, we rate it highly. The closest rival is the Saucony Peregrine 16, and the Puma holds its own.
Putting two running shoes side by side shows the trade-offs quickly, but which one suits you still depends on how you run. Weight and stack height set the feel underfoot. A lighter shoe with a lower stack feels quick and nimble, and a heavier shoe with a taller stack gives a softer, more protective ride over long miles. Drop matters too: the lower the heel-to-toe drop, the more work your calves and Achilles do.
Prices come from the UK retailers we check every day. Best price now is the cheapest current price we can link you to. The 90-day low shows how cheap the shoe has been lately, and the 30-day average tells you whether today's price is a real drop or just what it usually sells for. If neither shoe is at a price you like yet, open its page and set a price alert. We'll email you when it falls.
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